/usr/bin/java -Xmx8000000000 -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 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 18:52:38,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 18:52:38,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 18:52:38,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 18:52:38,905 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 [2021-06-12 18:52:38,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 18:52:38,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 18:52:38,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 18:52:38,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 18:52:38,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 18:52:38,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 18:52:38,938 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 18:52:38,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 18:52:38,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 18:52:38,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 18:52:38,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 18:52:38,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 18:52:38,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 18:52:38,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 18:52:38,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 18:52:38,939 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 18:52:38,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 18:52:38,939 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 18:52:38,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 18:52:38,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 18:52:38,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 18:52:38,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 18:52:38,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 18:52:38,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 18:52:38,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 18:52:38,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 18:52:38,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 18:52:38,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 18:52:38,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 18:52:38,941 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 18:52:38,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 18:52:38,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 18:52:39,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 18:52:39,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 18:52:39,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 18:52:39,180 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-12 18:52:39,181 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-12 18:52:39,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-06-12 18:52:39,181 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-06-12 18:52:39,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 18:52:39,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-12 18:52:39,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 18:52:39,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 18:52:39,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 18:52:39,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 18:52:39,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 18:52:39,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 18:52:39,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 18:52:39,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/1) ... [2021-06-12 18:52:39,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 18:52:39,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 18:52:39,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 18:52:39,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 18:52:39,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (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 [2021-06-12 18:52:39,295 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-12 18:52:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 18:52:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 18:52:39,296 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-12 18:52:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-12 18:52:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-12 18:52:39,297 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 18:52:39,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 18:52:39,393 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-12 18:52:39,394 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 06:52:39 BoogieIcfgContainer [2021-06-12 18:52:39,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 18:52:39,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 18:52:39,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 18:52:39,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 18:52:39,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:52:39" (1/2) ... [2021-06-12 18:52:39,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16b2b7 and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 06:52:39, skipping insertion in model container [2021-06-12 18:52:39,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 06:52:39" (2/2) ... [2021-06-12 18:52:39,400 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-06-12 18:52:39,407 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 18:52:39,407 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 18:52:39,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 18:52:39,408 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 18:52:39,437 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,438 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,438 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,438 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,439 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,439 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,441 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,442 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,442 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,443 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,444 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,444 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,446 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,449 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,449 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,449 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,452 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,469 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,473 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,476 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 18:52:39,513 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-12 18:52:39,526 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-12 18:52:39,549 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 18:52:39,550 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 18:52:39,550 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 18:52:39,550 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 18:52:39,550 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 18:52:39,550 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 18:52:39,550 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 18:52:39,550 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 18:52:39,574 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 44 transitions, 156 flow [2021-06-12 18:52:39,727 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) [2021-06-12 18:52:39,732 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) [2021-06-12 18:52:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:39,754 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:39,755 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:39,755 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash -725316694, now seen corresponding path program 1 times [2021-06-12 18:52:39,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:39,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46920186] [2021-06-12 18:52:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:39,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:39,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46920186] [2021-06-12 18:52:39,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46920186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:39,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:39,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 18:52:39,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281133607] [2021-06-12 18:52:39,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 18:52:39,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:39,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 18:52:39,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 18:52:39,915 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) [2021-06-12 18:52:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:39,952 INFO L93 Difference]: Finished difference Result 1331 states and 4324 transitions. [2021-06-12 18:52:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 18:52:39,953 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 [2021-06-12 18:52:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:39,974 INFO L225 Difference]: With dead ends: 1331 [2021-06-12 18:52:39,974 INFO L226 Difference]: Without dead ends: 1329 [2021-06-12 18:52:39,975 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 18:52:39,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-12 18:52:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2021-06-12 18:52:40,050 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) [2021-06-12 18:52:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 4322 transitions. [2021-06-12 18:52:40,056 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 4322 transitions. Word has length 26 [2021-06-12 18:52:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:40,057 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 4322 transitions. [2021-06-12 18:52:40,057 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) [2021-06-12 18:52:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 4322 transitions. [2021-06-12 18:52:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:40,061 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:40,061 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:40,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 18:52:40,061 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:40,062 INFO L82 PathProgramCache]: Analyzing trace with hash 992295916, now seen corresponding path program 1 times [2021-06-12 18:52:40,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:40,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606404706] [2021-06-12 18:52:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:40,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:40,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606404706] [2021-06-12 18:52:40,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606404706] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:40,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:40,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 18:52:40,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477851806] [2021-06-12 18:52:40,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 18:52:40,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:40,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 18:52:40,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 18:52:40,085 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) [2021-06-12 18:52:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:40,099 INFO L93 Difference]: Finished difference Result 1114 states and 3592 transitions. [2021-06-12 18:52:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 18:52:40,099 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 [2021-06-12 18:52:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:40,105 INFO L225 Difference]: With dead ends: 1114 [2021-06-12 18:52:40,105 INFO L226 Difference]: Without dead ends: 1114 [2021-06-12 18:52:40,106 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 18:52:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-06-12 18:52:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2021-06-12 18:52:40,132 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) [2021-06-12 18:52:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3592 transitions. [2021-06-12 18:52:40,137 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3592 transitions. Word has length 26 [2021-06-12 18:52:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:40,137 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 3592 transitions. [2021-06-12 18:52:40,138 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) [2021-06-12 18:52:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3592 transitions. [2021-06-12 18:52:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:40,140 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:40,140 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:40,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 18:52:40,141 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:40,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:40,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1308189016, now seen corresponding path program 1 times [2021-06-12 18:52:40,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:40,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155738828] [2021-06-12 18:52:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:40,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:40,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155738828] [2021-06-12 18:52:40,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155738828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:40,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:40,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 18:52:40,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079652228] [2021-06-12 18:52:40,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 18:52:40,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:40,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 18:52:40,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 18:52:40,225 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) [2021-06-12 18:52:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:40,329 INFO L93 Difference]: Finished difference Result 1876 states and 5924 transitions. [2021-06-12 18:52:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 18:52:40,330 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 [2021-06-12 18:52:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:40,338 INFO L225 Difference]: With dead ends: 1876 [2021-06-12 18:52:40,338 INFO L226 Difference]: Without dead ends: 1614 [2021-06-12 18:52:40,338 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 18:52:40,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-06-12 18:52:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2021-06-12 18:52:40,386 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) [2021-06-12 18:52:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5058 transitions. [2021-06-12 18:52:40,391 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5058 transitions. Word has length 26 [2021-06-12 18:52:40,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:40,392 INFO L482 AbstractCegarLoop]: Abstraction has 1614 states and 5058 transitions. [2021-06-12 18:52:40,392 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) [2021-06-12 18:52:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5058 transitions. [2021-06-12 18:52:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:40,397 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:40,397 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:40,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 18:52:40,398 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash 448604022, now seen corresponding path program 2 times [2021-06-12 18:52:40,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:40,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669683180] [2021-06-12 18:52:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:40,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:40,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669683180] [2021-06-12 18:52:40,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669683180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:40,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:40,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:52:40,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644744423] [2021-06-12 18:52:40,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:52:40,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:40,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:52:40,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:40,539 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) [2021-06-12 18:52:40,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:40,661 INFO L93 Difference]: Finished difference Result 1887 states and 5832 transitions. [2021-06-12 18:52:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:52:40,662 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 [2021-06-12 18:52:40,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:40,668 INFO L225 Difference]: With dead ends: 1887 [2021-06-12 18:52:40,669 INFO L226 Difference]: Without dead ends: 1628 [2021-06-12 18:52:40,669 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-06-12 18:52:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1508. [2021-06-12 18:52:40,695 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) [2021-06-12 18:52:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4726 transitions. [2021-06-12 18:52:40,699 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4726 transitions. Word has length 26 [2021-06-12 18:52:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:40,699 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4726 transitions. [2021-06-12 18:52:40,700 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) [2021-06-12 18:52:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4726 transitions. [2021-06-12 18:52:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:40,703 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:40,703 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:40,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 18:52:40,703 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:40,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:40,703 INFO L82 PathProgramCache]: Analyzing trace with hash -601874730, now seen corresponding path program 3 times [2021-06-12 18:52:40,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:40,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589302007] [2021-06-12 18:52:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:40,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:40,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589302007] [2021-06-12 18:52:40,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589302007] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:40,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:40,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:52:40,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052446422] [2021-06-12 18:52:40,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:52:40,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:40,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:52:40,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:40,766 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) [2021-06-12 18:52:40,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:40,900 INFO L93 Difference]: Finished difference Result 1901 states and 5814 transitions. [2021-06-12 18:52:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:52:40,901 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 [2021-06-12 18:52:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:40,908 INFO L225 Difference]: With dead ends: 1901 [2021-06-12 18:52:40,909 INFO L226 Difference]: Without dead ends: 1646 [2021-06-12 18:52:40,909 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-06-12 18:52:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1458. [2021-06-12 18:52:40,946 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) [2021-06-12 18:52:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4554 transitions. [2021-06-12 18:52:40,953 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4554 transitions. Word has length 26 [2021-06-12 18:52:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:40,953 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 4554 transitions. [2021-06-12 18:52:40,953 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) [2021-06-12 18:52:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4554 transitions. [2021-06-12 18:52:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:40,957 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:40,957 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:40,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 18:52:40,958 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:40,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1461459724, now seen corresponding path program 4 times [2021-06-12 18:52:40,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:40,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457236134] [2021-06-12 18:52:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:41,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:41,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457236134] [2021-06-12 18:52:41,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457236134] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:41,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:41,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:41,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620339492] [2021-06-12 18:52:41,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:41,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:41,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:41,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:41,103 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) [2021-06-12 18:52:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:41,254 INFO L93 Difference]: Finished difference Result 1678 states and 5178 transitions. [2021-06-12 18:52:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:41,255 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 [2021-06-12 18:52:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:41,262 INFO L225 Difference]: With dead ends: 1678 [2021-06-12 18:52:41,262 INFO L226 Difference]: Without dead ends: 1484 [2021-06-12 18:52:41,265 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-06-12 18:52:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1406. [2021-06-12 18:52:41,290 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) [2021-06-12 18:52:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4398 transitions. [2021-06-12 18:52:41,294 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4398 transitions. Word has length 26 [2021-06-12 18:52:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:41,294 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4398 transitions. [2021-06-12 18:52:41,295 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) [2021-06-12 18:52:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4398 transitions. [2021-06-12 18:52:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:41,298 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:41,298 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:41,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 18:52:41,299 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash -47437838, now seen corresponding path program 5 times [2021-06-12 18:52:41,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:41,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776581245] [2021-06-12 18:52:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:41,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:41,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776581245] [2021-06-12 18:52:41,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776581245] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:41,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:41,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:52:41,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064743002] [2021-06-12 18:52:41,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:52:41,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:41,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:52:41,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:41,396 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) [2021-06-12 18:52:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:41,518 INFO L93 Difference]: Finished difference Result 1788 states and 5480 transitions. [2021-06-12 18:52:41,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:52:41,518 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 [2021-06-12 18:52:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:41,544 INFO L225 Difference]: With dead ends: 1788 [2021-06-12 18:52:41,545 INFO L226 Difference]: Without dead ends: 1647 [2021-06-12 18:52:41,545 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:41,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-12 18:52:41,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1463. [2021-06-12 18:52:41,571 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) [2021-06-12 18:52:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4576 transitions. [2021-06-12 18:52:41,575 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4576 transitions. Word has length 26 [2021-06-12 18:52:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:41,575 INFO L482 AbstractCegarLoop]: Abstraction has 1463 states and 4576 transitions. [2021-06-12 18:52:41,576 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) [2021-06-12 18:52:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4576 transitions. [2021-06-12 18:52:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:41,578 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:41,578 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:41,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 18:52:41,579 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:41,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1711235668, now seen corresponding path program 6 times [2021-06-12 18:52:41,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:41,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753271492] [2021-06-12 18:52:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:41,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:41,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753271492] [2021-06-12 18:52:41,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753271492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:41,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:41,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:41,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090681924] [2021-06-12 18:52:41,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:41,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:41,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:41,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:41,669 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) [2021-06-12 18:52:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:41,813 INFO L93 Difference]: Finished difference Result 1778 states and 5460 transitions. [2021-06-12 18:52:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:41,813 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 [2021-06-12 18:52:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:41,820 INFO L225 Difference]: With dead ends: 1778 [2021-06-12 18:52:41,820 INFO L226 Difference]: Without dead ends: 1649 [2021-06-12 18:52:41,821 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-06-12 18:52:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1488. [2021-06-12 18:52:41,846 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) [2021-06-12 18:52:41,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4654 transitions. [2021-06-12 18:52:41,850 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4654 transitions. Word has length 26 [2021-06-12 18:52:41,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:41,851 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4654 transitions. [2021-06-12 18:52:41,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:41,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4654 transitions. [2021-06-12 18:52:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:41,853 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:41,854 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:41,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 18:52:41,854 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:41,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1714287020, now seen corresponding path program 7 times [2021-06-12 18:52:41,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:41,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469304324] [2021-06-12 18:52:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:41,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:41,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469304324] [2021-06-12 18:52:41,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469304324] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:41,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:41,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:41,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876900834] [2021-06-12 18:52:41,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:41,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:41,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:41,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:41,922 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) [2021-06-12 18:52:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:42,080 INFO L93 Difference]: Finished difference Result 1806 states and 5565 transitions. [2021-06-12 18:52:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:42,085 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 [2021-06-12 18:52:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:42,097 INFO L225 Difference]: With dead ends: 1806 [2021-06-12 18:52:42,097 INFO L226 Difference]: Without dead ends: 1647 [2021-06-12 18:52:42,097 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-12 18:52:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1509. [2021-06-12 18:52:42,128 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) [2021-06-12 18:52:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4715 transitions. [2021-06-12 18:52:42,132 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4715 transitions. Word has length 26 [2021-06-12 18:52:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:42,133 INFO L482 AbstractCegarLoop]: Abstraction has 1509 states and 4715 transitions. [2021-06-12 18:52:42,133 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) [2021-06-12 18:52:42,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4715 transitions. [2021-06-12 18:52:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:42,136 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:42,136 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:42,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-12 18:52:42,137 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:42,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1111969046, now seen corresponding path program 8 times [2021-06-12 18:52:42,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:42,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133217753] [2021-06-12 18:52:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:42,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:42,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133217753] [2021-06-12 18:52:42,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133217753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:42,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:42,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:42,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104539009] [2021-06-12 18:52:42,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:42,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:42,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:42,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:42,219 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) [2021-06-12 18:52:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:42,361 INFO L93 Difference]: Finished difference Result 1852 states and 5672 transitions. [2021-06-12 18:52:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:42,362 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 [2021-06-12 18:52:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:42,369 INFO L225 Difference]: With dead ends: 1852 [2021-06-12 18:52:42,369 INFO L226 Difference]: Without dead ends: 1713 [2021-06-12 18:52:42,369 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-06-12 18:52:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1499. [2021-06-12 18:52:42,394 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) [2021-06-12 18:52:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4685 transitions. [2021-06-12 18:52:42,397 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4685 transitions. Word has length 26 [2021-06-12 18:52:42,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:42,398 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4685 transitions. [2021-06-12 18:52:42,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:42,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4685 transitions. [2021-06-12 18:52:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:42,400 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:42,400 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:42,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-12 18:52:42,401 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:42,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:42,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1102566680, now seen corresponding path program 9 times [2021-06-12 18:52:42,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:42,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239151731] [2021-06-12 18:52:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:42,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:42,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239151731] [2021-06-12 18:52:42,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239151731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:42,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:42,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:52:42,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778539661] [2021-06-12 18:52:42,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:52:42,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:42,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:52:42,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:42,454 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) [2021-06-12 18:52:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:42,586 INFO L93 Difference]: Finished difference Result 1849 states and 5664 transitions. [2021-06-12 18:52:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:52:42,586 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 [2021-06-12 18:52:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:42,599 INFO L225 Difference]: With dead ends: 1849 [2021-06-12 18:52:42,599 INFO L226 Difference]: Without dead ends: 1708 [2021-06-12 18:52:42,599 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-06-12 18:52:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1525. [2021-06-12 18:52:42,627 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) [2021-06-12 18:52:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4765 transitions. [2021-06-12 18:52:42,630 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4765 transitions. Word has length 26 [2021-06-12 18:52:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:42,630 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4765 transitions. [2021-06-12 18:52:42,630 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) [2021-06-12 18:52:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4765 transitions. [2021-06-12 18:52:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:42,634 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:42,634 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:42,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-12 18:52:42,634 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:42,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:42,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1972011288, now seen corresponding path program 10 times [2021-06-12 18:52:42,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:42,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906416537] [2021-06-12 18:52:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:42,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:42,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906416537] [2021-06-12 18:52:42,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906416537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:42,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:42,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:42,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083075065] [2021-06-12 18:52:42,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:42,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:42,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:42,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:42,721 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) [2021-06-12 18:52:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:42,865 INFO L93 Difference]: Finished difference Result 1932 states and 5906 transitions. [2021-06-12 18:52:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:42,865 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 [2021-06-12 18:52:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:42,869 INFO L225 Difference]: With dead ends: 1932 [2021-06-12 18:52:42,869 INFO L226 Difference]: Without dead ends: 1665 [2021-06-12 18:52:42,870 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-06-12 18:52:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1415. [2021-06-12 18:52:42,894 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) [2021-06-12 18:52:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4371 transitions. [2021-06-12 18:52:42,897 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4371 transitions. Word has length 26 [2021-06-12 18:52:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:42,898 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4371 transitions. [2021-06-12 18:52:42,898 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) [2021-06-12 18:52:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4371 transitions. [2021-06-12 18:52:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:42,900 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:42,900 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:42,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-12 18:52:42,900 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:42,901 INFO L82 PathProgramCache]: Analyzing trace with hash -615174090, now seen corresponding path program 11 times [2021-06-12 18:52:42,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:42,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159119475] [2021-06-12 18:52:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:42,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:42,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159119475] [2021-06-12 18:52:42,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159119475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:42,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:42,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:42,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338140014] [2021-06-12 18:52:42,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:42,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:42,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:42,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:42,973 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) [2021-06-12 18:52:43,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:43,135 INFO L93 Difference]: Finished difference Result 1661 states and 5048 transitions. [2021-06-12 18:52:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:43,135 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 [2021-06-12 18:52:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:43,138 INFO L225 Difference]: With dead ends: 1661 [2021-06-12 18:52:43,138 INFO L226 Difference]: Without dead ends: 1528 [2021-06-12 18:52:43,139 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-06-12 18:52:43,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1405. [2021-06-12 18:52:43,161 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) [2021-06-12 18:52:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 4334 transitions. [2021-06-12 18:52:43,164 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 4334 transitions. Word has length 26 [2021-06-12 18:52:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:43,164 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 4334 transitions. [2021-06-12 18:52:43,164 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) [2021-06-12 18:52:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 4334 transitions. [2021-06-12 18:52:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:43,167 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:43,167 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:43,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-12 18:52:43,167 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:43,167 INFO L82 PathProgramCache]: Analyzing trace with hash 254270518, now seen corresponding path program 12 times [2021-06-12 18:52:43,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:43,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382357461] [2021-06-12 18:52:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:43,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:43,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382357461] [2021-06-12 18:52:43,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382357461] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:43,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:43,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:43,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249543272] [2021-06-12 18:52:43,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:43,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:43,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:43,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:43,224 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) [2021-06-12 18:52:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:43,369 INFO L93 Difference]: Finished difference Result 1871 states and 5674 transitions. [2021-06-12 18:52:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:43,370 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 [2021-06-12 18:52:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:43,373 INFO L225 Difference]: With dead ends: 1871 [2021-06-12 18:52:43,373 INFO L226 Difference]: Without dead ends: 1726 [2021-06-12 18:52:43,373 INFO L728 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 [2021-06-12 18:52:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-06-12 18:52:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1433. [2021-06-12 18:52:43,398 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) [2021-06-12 18:52:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 4419 transitions. [2021-06-12 18:52:43,401 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 4419 transitions. Word has length 26 [2021-06-12 18:52:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:43,401 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 4419 transitions. [2021-06-12 18:52:43,401 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) [2021-06-12 18:52:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 4419 transitions. [2021-06-12 18:52:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:43,404 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:43,405 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:43,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-12 18:52:43,405 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1201287140, now seen corresponding path program 13 times [2021-06-12 18:52:43,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:43,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24862824] [2021-06-12 18:52:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:43,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:43,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24862824] [2021-06-12 18:52:43,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24862824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:43,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:43,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:43,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514555249] [2021-06-12 18:52:43,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:43,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:43,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:43,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:43,470 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) [2021-06-12 18:52:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:43,619 INFO L93 Difference]: Finished difference Result 1746 states and 5285 transitions. [2021-06-12 18:52:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:43,620 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 [2021-06-12 18:52:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:43,623 INFO L225 Difference]: With dead ends: 1746 [2021-06-12 18:52:43,623 INFO L226 Difference]: Without dead ends: 1561 [2021-06-12 18:52:43,623 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-06-12 18:52:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1389. [2021-06-12 18:52:43,646 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) [2021-06-12 18:52:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4285 transitions. [2021-06-12 18:52:43,649 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4285 transitions. Word has length 26 [2021-06-12 18:52:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:43,649 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4285 transitions. [2021-06-12 18:52:43,649 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) [2021-06-12 18:52:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4285 transitions. [2021-06-12 18:52:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:43,651 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:43,651 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:43,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-12 18:52:43,651 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:43,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:43,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1140197304, now seen corresponding path program 14 times [2021-06-12 18:52:43,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:43,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331640431] [2021-06-12 18:52:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:43,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:43,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331640431] [2021-06-12 18:52:43,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331640431] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:43,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:43,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:43,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911308946] [2021-06-12 18:52:43,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:43,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:43,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:43,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:43,715 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) [2021-06-12 18:52:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:43,865 INFO L93 Difference]: Finished difference Result 1686 states and 5109 transitions. [2021-06-12 18:52:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:43,873 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 [2021-06-12 18:52:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:43,876 INFO L225 Difference]: With dead ends: 1686 [2021-06-12 18:52:43,876 INFO L226 Difference]: Without dead ends: 1511 [2021-06-12 18:52:43,876 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:43,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-06-12 18:52:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1339. [2021-06-12 18:52:43,898 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) [2021-06-12 18:52:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4135 transitions. [2021-06-12 18:52:43,901 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4135 transitions. Word has length 26 [2021-06-12 18:52:43,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:43,901 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4135 transitions. [2021-06-12 18:52:43,901 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) [2021-06-12 18:52:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4135 transitions. [2021-06-12 18:52:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:43,903 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:43,903 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:43,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-12 18:52:43,903 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:43,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1396096486, now seen corresponding path program 15 times [2021-06-12 18:52:43,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:43,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452471802] [2021-06-12 18:52:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:43,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:43,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452471802] [2021-06-12 18:52:43,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452471802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:43,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:43,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:43,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836251676] [2021-06-12 18:52:43,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:43,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:43,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:43,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:43,962 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) [2021-06-12 18:52:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:44,108 INFO L93 Difference]: Finished difference Result 1627 states and 4941 transitions. [2021-06-12 18:52:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:44,109 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 [2021-06-12 18:52:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:44,112 INFO L225 Difference]: With dead ends: 1627 [2021-06-12 18:52:44,112 INFO L226 Difference]: Without dead ends: 1462 [2021-06-12 18:52:44,112 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-06-12 18:52:44,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1322. [2021-06-12 18:52:44,136 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) [2021-06-12 18:52:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 4086 transitions. [2021-06-12 18:52:44,139 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 4086 transitions. Word has length 26 [2021-06-12 18:52:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:44,139 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 4086 transitions. [2021-06-12 18:52:44,139 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) [2021-06-12 18:52:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 4086 transitions. [2021-06-12 18:52:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:44,141 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:44,141 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:44,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-12 18:52:44,142 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:44,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:44,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1995363108, now seen corresponding path program 16 times [2021-06-12 18:52:44,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:44,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106806037] [2021-06-12 18:52:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:44,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:44,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106806037] [2021-06-12 18:52:44,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106806037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:44,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:44,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:44,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121359556] [2021-06-12 18:52:44,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:44,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:44,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:44,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:44,203 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) [2021-06-12 18:52:44,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:44,351 INFO L93 Difference]: Finished difference Result 1728 states and 5256 transitions. [2021-06-12 18:52:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:44,352 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 [2021-06-12 18:52:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:44,355 INFO L225 Difference]: With dead ends: 1728 [2021-06-12 18:52:44,355 INFO L226 Difference]: Without dead ends: 1573 [2021-06-12 18:52:44,355 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-12 18:52:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1301. [2021-06-12 18:52:44,378 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) [2021-06-12 18:52:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4021 transitions. [2021-06-12 18:52:44,380 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4021 transitions. Word has length 26 [2021-06-12 18:52:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:44,380 INFO L482 AbstractCegarLoop]: Abstraction has 1301 states and 4021 transitions. [2021-06-12 18:52:44,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4021 transitions. [2021-06-12 18:52:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:44,382 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:44,382 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:44,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-12 18:52:44,382 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:44,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1729596350, now seen corresponding path program 17 times [2021-06-12 18:52:44,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:44,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304886938] [2021-06-12 18:52:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:44,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:44,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304886938] [2021-06-12 18:52:44,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304886938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:44,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:44,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:44,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099701038] [2021-06-12 18:52:44,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:44,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:44,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:44,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:44,440 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) [2021-06-12 18:52:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:44,582 INFO L93 Difference]: Finished difference Result 1527 states and 4646 transitions. [2021-06-12 18:52:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:44,582 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 [2021-06-12 18:52:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:44,585 INFO L225 Difference]: With dead ends: 1527 [2021-06-12 18:52:44,585 INFO L226 Difference]: Without dead ends: 1316 [2021-06-12 18:52:44,586 INFO L728 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 [2021-06-12 18:52:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-06-12 18:52:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1138. [2021-06-12 18:52:44,602 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) [2021-06-12 18:52:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 3549 transitions. [2021-06-12 18:52:44,604 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 3549 transitions. Word has length 26 [2021-06-12 18:52:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:44,604 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 3549 transitions. [2021-06-12 18:52:44,605 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) [2021-06-12 18:52:44,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 3549 transitions. [2021-06-12 18:52:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:44,606 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:44,606 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:44,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-12 18:52:44,606 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:44,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:44,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1175403642, now seen corresponding path program 18 times [2021-06-12 18:52:44,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:44,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228221606] [2021-06-12 18:52:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:44,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:44,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228221606] [2021-06-12 18:52:44,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228221606] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:44,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:44,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:52:44,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332562020] [2021-06-12 18:52:44,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:52:44,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:44,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:52:44,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:44,662 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) [2021-06-12 18:52:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:44,765 INFO L93 Difference]: Finished difference Result 1698 states and 5175 transitions. [2021-06-12 18:52:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:52:44,765 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 [2021-06-12 18:52:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:44,768 INFO L225 Difference]: With dead ends: 1698 [2021-06-12 18:52:44,768 INFO L226 Difference]: Without dead ends: 1446 [2021-06-12 18:52:44,768 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-06-12 18:52:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1252. [2021-06-12 18:52:44,787 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) [2021-06-12 18:52:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3852 transitions. [2021-06-12 18:52:44,789 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3852 transitions. Word has length 26 [2021-06-12 18:52:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:44,790 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3852 transitions. [2021-06-12 18:52:44,790 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) [2021-06-12 18:52:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3852 transitions. [2021-06-12 18:52:44,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:44,792 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:44,792 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:44,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-12 18:52:44,792 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash 315818648, now seen corresponding path program 19 times [2021-06-12 18:52:44,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:44,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140984267] [2021-06-12 18:52:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:44,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:44,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140984267] [2021-06-12 18:52:44,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140984267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:44,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:44,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:44,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350947936] [2021-06-12 18:52:44,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:44,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:44,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:44,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:44,848 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) [2021-06-12 18:52:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:44,997 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-06-12 18:52:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:44,997 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 [2021-06-12 18:52:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:44,999 INFO L225 Difference]: With dead ends: 1559 [2021-06-12 18:52:44,999 INFO L226 Difference]: Without dead ends: 1310 [2021-06-12 18:52:45,000 INFO L728 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 [2021-06-12 18:52:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-12 18:52:45,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1106. [2021-06-12 18:52:45,016 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) [2021-06-12 18:52:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3413 transitions. [2021-06-12 18:52:45,018 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3413 transitions. Word has length 26 [2021-06-12 18:52:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:45,018 INFO L482 AbstractCegarLoop]: Abstraction has 1106 states and 3413 transitions. [2021-06-12 18:52:45,018 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) [2021-06-12 18:52:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3413 transitions. [2021-06-12 18:52:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:45,020 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:45,020 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:45,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-12 18:52:45,020 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash -734660104, now seen corresponding path program 20 times [2021-06-12 18:52:45,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:45,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924368542] [2021-06-12 18:52:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:45,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:45,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924368542] [2021-06-12 18:52:45,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924368542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:45,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:45,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:45,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607132277] [2021-06-12 18:52:45,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:45,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:45,073 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) [2021-06-12 18:52:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:45,217 INFO L93 Difference]: Finished difference Result 1455 states and 4380 transitions. [2021-06-12 18:52:45,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:45,217 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 [2021-06-12 18:52:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:45,219 INFO L225 Difference]: With dead ends: 1455 [2021-06-12 18:52:45,219 INFO L226 Difference]: Without dead ends: 1268 [2021-06-12 18:52:45,220 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-06-12 18:52:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1116. [2021-06-12 18:52:45,235 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) [2021-06-12 18:52:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 3431 transitions. [2021-06-12 18:52:45,237 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 3431 transitions. Word has length 26 [2021-06-12 18:52:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:45,237 INFO L482 AbstractCegarLoop]: Abstraction has 1116 states and 3431 transitions. [2021-06-12 18:52:45,237 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) [2021-06-12 18:52:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 3431 transitions. [2021-06-12 18:52:45,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:45,239 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:45,239 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:45,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-12 18:52:45,239 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:45,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:45,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1594245098, now seen corresponding path program 21 times [2021-06-12 18:52:45,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:45,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320654919] [2021-06-12 18:52:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:45,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:45,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320654919] [2021-06-12 18:52:45,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320654919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:45,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:45,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:45,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975724026] [2021-06-12 18:52:45,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:45,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:45,308 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) [2021-06-12 18:52:45,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:45,477 INFO L93 Difference]: Finished difference Result 1381 states and 4160 transitions. [2021-06-12 18:52:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:45,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:45,480 INFO L225 Difference]: With dead ends: 1381 [2021-06-12 18:52:45,480 INFO L226 Difference]: Without dead ends: 1226 [2021-06-12 18:52:45,480 INFO L728 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 [2021-06-12 18:52:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-06-12 18:52:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1090. [2021-06-12 18:52:45,494 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) [2021-06-12 18:52:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 3365 transitions. [2021-06-12 18:52:45,496 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 3365 transitions. Word has length 26 [2021-06-12 18:52:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:45,496 INFO L482 AbstractCegarLoop]: Abstraction has 1090 states and 3365 transitions. [2021-06-12 18:52:45,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 3365 transitions. [2021-06-12 18:52:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:45,498 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:45,498 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:45,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-12 18:52:45,498 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:45,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:45,498 INFO L82 PathProgramCache]: Analyzing trace with hash -180223212, now seen corresponding path program 22 times [2021-06-12 18:52:45,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:45,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465894113] [2021-06-12 18:52:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:45,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:45,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465894113] [2021-06-12 18:52:45,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465894113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:45,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:45,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:45,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420146867] [2021-06-12 18:52:45,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:45,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:45,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:45,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:45,553 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) [2021-06-12 18:52:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:45,695 INFO L93 Difference]: Finished difference Result 1426 states and 4315 transitions. [2021-06-12 18:52:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:45,695 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 [2021-06-12 18:52:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:45,698 INFO L225 Difference]: With dead ends: 1426 [2021-06-12 18:52:45,698 INFO L226 Difference]: Without dead ends: 1303 [2021-06-12 18:52:45,698 INFO L728 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 [2021-06-12 18:52:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-06-12 18:52:45,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1149. [2021-06-12 18:52:45,712 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) [2021-06-12 18:52:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3546 transitions. [2021-06-12 18:52:45,714 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3546 transitions. Word has length 26 [2021-06-12 18:52:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:45,714 INFO L482 AbstractCegarLoop]: Abstraction has 1149 states and 3546 transitions. [2021-06-12 18:52:45,714 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) [2021-06-12 18:52:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3546 transitions. [2021-06-12 18:52:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:45,716 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:45,716 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:45,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-12 18:52:45,716 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:45,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1578450294, now seen corresponding path program 23 times [2021-06-12 18:52:45,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:45,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017632918] [2021-06-12 18:52:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:45,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:45,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017632918] [2021-06-12 18:52:45,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017632918] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:45,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:45,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:45,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390091738] [2021-06-12 18:52:45,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:45,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:45,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:45,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:45,780 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) [2021-06-12 18:52:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:45,966 INFO L93 Difference]: Finished difference Result 1438 states and 4359 transitions. [2021-06-12 18:52:45,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:45,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:45,968 INFO L225 Difference]: With dead ends: 1438 [2021-06-12 18:52:45,968 INFO L226 Difference]: Without dead ends: 1327 [2021-06-12 18:52:45,969 INFO L728 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 [2021-06-12 18:52:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-06-12 18:52:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1164. [2021-06-12 18:52:45,993 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) [2021-06-12 18:52:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 3592 transitions. [2021-06-12 18:52:45,995 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 3592 transitions. Word has length 26 [2021-06-12 18:52:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:45,995 INFO L482 AbstractCegarLoop]: Abstraction has 1164 states and 3592 transitions. [2021-06-12 18:52:45,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 3592 transitions. [2021-06-12 18:52:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:45,997 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:45,997 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:45,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-12 18:52:45,997 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:45,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1847072394, now seen corresponding path program 24 times [2021-06-12 18:52:45,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:45,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050579366] [2021-06-12 18:52:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:46,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:46,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050579366] [2021-06-12 18:52:46,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050579366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:46,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:46,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:46,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84204321] [2021-06-12 18:52:46,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:46,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:46,063 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) [2021-06-12 18:52:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:46,244 INFO L93 Difference]: Finished difference Result 1343 states and 4063 transitions. [2021-06-12 18:52:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:46,246 INFO L225 Difference]: With dead ends: 1343 [2021-06-12 18:52:46,246 INFO L226 Difference]: Without dead ends: 1209 [2021-06-12 18:52:46,246 INFO L728 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 [2021-06-12 18:52:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-06-12 18:52:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1153. [2021-06-12 18:52:46,261 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) [2021-06-12 18:52:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 3557 transitions. [2021-06-12 18:52:46,263 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 3557 transitions. Word has length 26 [2021-06-12 18:52:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:46,263 INFO L482 AbstractCegarLoop]: Abstraction has 1153 states and 3557 transitions. [2021-06-12 18:52:46,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 3557 transitions. [2021-06-12 18:52:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:46,265 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:46,265 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:46,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-12 18:52:46,265 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:46,266 INFO L82 PathProgramCache]: Analyzing trace with hash 979183672, now seen corresponding path program 25 times [2021-06-12 18:52:46,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:46,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875187948] [2021-06-12 18:52:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:46,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:46,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875187948] [2021-06-12 18:52:46,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875187948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:46,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:46,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:46,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844683008] [2021-06-12 18:52:46,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:46,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:46,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:46,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:46,343 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) [2021-06-12 18:52:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:46,517 INFO L93 Difference]: Finished difference Result 1431 states and 4320 transitions. [2021-06-12 18:52:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:46,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:46,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:46,519 INFO L225 Difference]: With dead ends: 1431 [2021-06-12 18:52:46,519 INFO L226 Difference]: Without dead ends: 1310 [2021-06-12 18:52:46,532 INFO L728 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 [2021-06-12 18:52:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-12 18:52:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1143. [2021-06-12 18:52:46,548 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) [2021-06-12 18:52:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3527 transitions. [2021-06-12 18:52:46,550 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3527 transitions. Word has length 26 [2021-06-12 18:52:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:46,550 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3527 transitions. [2021-06-12 18:52:46,550 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) [2021-06-12 18:52:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3527 transitions. [2021-06-12 18:52:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:46,552 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:46,552 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:46,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-12 18:52:46,552 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash 969781306, now seen corresponding path program 26 times [2021-06-12 18:52:46,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:46,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017835390] [2021-06-12 18:52:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:46,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:46,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017835390] [2021-06-12 18:52:46,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017835390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:46,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:46,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:46,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087124622] [2021-06-12 18:52:46,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:46,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:46,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:46,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:46,607 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) [2021-06-12 18:52:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:46,740 INFO L93 Difference]: Finished difference Result 1389 states and 4203 transitions. [2021-06-12 18:52:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:46,741 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 [2021-06-12 18:52:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:46,743 INFO L225 Difference]: With dead ends: 1389 [2021-06-12 18:52:46,743 INFO L226 Difference]: Without dead ends: 1278 [2021-06-12 18:52:46,743 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-06-12 18:52:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1180. [2021-06-12 18:52:46,759 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) [2021-06-12 18:52:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3634 transitions. [2021-06-12 18:52:46,761 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3634 transitions. Word has length 26 [2021-06-12 18:52:46,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:46,761 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3634 transitions. [2021-06-12 18:52:46,761 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) [2021-06-12 18:52:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3634 transitions. [2021-06-12 18:52:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:46,762 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:46,762 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:46,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-12 18:52:46,763 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1839225914, now seen corresponding path program 27 times [2021-06-12 18:52:46,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:46,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936909661] [2021-06-12 18:52:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:46,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:46,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936909661] [2021-06-12 18:52:46,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936909661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:46,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:46,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:46,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242087028] [2021-06-12 18:52:46,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:46,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:46,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:46,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:46,841 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) [2021-06-12 18:52:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:47,011 INFO L93 Difference]: Finished difference Result 1506 states and 4529 transitions. [2021-06-12 18:52:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:47,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:47,013 INFO L225 Difference]: With dead ends: 1506 [2021-06-12 18:52:47,013 INFO L226 Difference]: Without dead ends: 1281 [2021-06-12 18:52:47,014 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-12 18:52:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1143. [2021-06-12 18:52:47,028 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) [2021-06-12 18:52:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3503 transitions. [2021-06-12 18:52:47,030 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3503 transitions. Word has length 26 [2021-06-12 18:52:47,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:47,030 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3503 transitions. [2021-06-12 18:52:47,030 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) [2021-06-12 18:52:47,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3503 transitions. [2021-06-12 18:52:47,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:47,031 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:47,031 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:47,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-12 18:52:47,032 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:47,032 INFO L82 PathProgramCache]: Analyzing trace with hash -747959464, now seen corresponding path program 28 times [2021-06-12 18:52:47,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:47,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581811055] [2021-06-12 18:52:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:47,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:47,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581811055] [2021-06-12 18:52:47,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581811055] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:47,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:47,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:47,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079030806] [2021-06-12 18:52:47,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:47,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:47,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:47,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:47,107 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) [2021-06-12 18:52:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:47,283 INFO L93 Difference]: Finished difference Result 1303 states and 3927 transitions. [2021-06-12 18:52:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:47,284 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 [2021-06-12 18:52:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:47,285 INFO L225 Difference]: With dead ends: 1303 [2021-06-12 18:52:47,285 INFO L226 Difference]: Without dead ends: 1192 [2021-06-12 18:52:47,286 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-06-12 18:52:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1154. [2021-06-12 18:52:47,300 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) [2021-06-12 18:52:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3534 transitions. [2021-06-12 18:52:47,302 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3534 transitions. Word has length 26 [2021-06-12 18:52:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:47,302 INFO L482 AbstractCegarLoop]: Abstraction has 1154 states and 3534 transitions. [2021-06-12 18:52:47,302 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) [2021-06-12 18:52:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3534 transitions. [2021-06-12 18:52:47,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:47,303 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:47,303 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:47,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-12 18:52:47,304 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:47,304 INFO L82 PathProgramCache]: Analyzing trace with hash 121485144, now seen corresponding path program 29 times [2021-06-12 18:52:47,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:47,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137644728] [2021-06-12 18:52:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:47,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:47,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137644728] [2021-06-12 18:52:47,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137644728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:47,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:47,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:47,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186910909] [2021-06-12 18:52:47,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:47,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:47,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:47,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:47,365 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) [2021-06-12 18:52:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:47,534 INFO L93 Difference]: Finished difference Result 1496 states and 4503 transitions. [2021-06-12 18:52:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:47,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:47,536 INFO L225 Difference]: With dead ends: 1496 [2021-06-12 18:52:47,536 INFO L226 Difference]: Without dead ends: 1369 [2021-06-12 18:52:47,536 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-06-12 18:52:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1143. [2021-06-12 18:52:47,566 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) [2021-06-12 18:52:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3501 transitions. [2021-06-12 18:52:47,568 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3501 transitions. Word has length 26 [2021-06-12 18:52:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:47,568 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3501 transitions. [2021-06-12 18:52:47,568 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) [2021-06-12 18:52:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3501 transitions. [2021-06-12 18:52:47,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:47,570 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:47,570 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:47,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-12 18:52:47,570 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:47,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:47,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1334072514, now seen corresponding path program 30 times [2021-06-12 18:52:47,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:47,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104443686] [2021-06-12 18:52:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:47,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:47,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104443686] [2021-06-12 18:52:47,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104443686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:47,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:47,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:47,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186632153] [2021-06-12 18:52:47,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:47,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:47,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:47,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:47,635 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) [2021-06-12 18:52:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:47,796 INFO L93 Difference]: Finished difference Result 1406 states and 4227 transitions. [2021-06-12 18:52:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:47,798 INFO L225 Difference]: With dead ends: 1406 [2021-06-12 18:52:47,799 INFO L226 Difference]: Without dead ends: 1239 [2021-06-12 18:52:47,799 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-06-12 18:52:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1113. [2021-06-12 18:52:47,812 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) [2021-06-12 18:52:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3431 transitions. [2021-06-12 18:52:47,814 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3431 transitions. Word has length 26 [2021-06-12 18:52:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:47,814 INFO L482 AbstractCegarLoop]: Abstraction has 1113 states and 3431 transitions. [2021-06-12 18:52:47,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3431 transitions. [2021-06-12 18:52:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:47,816 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:47,816 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:47,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-12 18:52:47,816 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:47,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1104301336, now seen corresponding path program 31 times [2021-06-12 18:52:47,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:47,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526246006] [2021-06-12 18:52:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:47,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:47,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526246006] [2021-06-12 18:52:47,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526246006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:47,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:47,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:52:47,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917298263] [2021-06-12 18:52:47,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:52:47,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:47,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:52:47,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:47,859 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) [2021-06-12 18:52:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:47,963 INFO L93 Difference]: Finished difference Result 1453 states and 4359 transitions. [2021-06-12 18:52:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:52:47,964 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 [2021-06-12 18:52:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:47,965 INFO L225 Difference]: With dead ends: 1453 [2021-06-12 18:52:47,965 INFO L226 Difference]: Without dead ends: 1292 [2021-06-12 18:52:47,965 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:47,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-12 18:52:47,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1206. [2021-06-12 18:52:47,979 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) [2021-06-12 18:52:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 3680 transitions. [2021-06-12 18:52:47,981 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 3680 transitions. Word has length 26 [2021-06-12 18:52:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:47,981 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 3680 transitions. [2021-06-12 18:52:47,981 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) [2021-06-12 18:52:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 3680 transitions. [2021-06-12 18:52:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:47,983 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:47,983 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:47,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-12 18:52:47,983 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:47,984 INFO L82 PathProgramCache]: Analyzing trace with hash 244716342, now seen corresponding path program 32 times [2021-06-12 18:52:47,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:47,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578801549] [2021-06-12 18:52:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:48,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:48,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578801549] [2021-06-12 18:52:48,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578801549] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:48,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:48,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:48,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058094915] [2021-06-12 18:52:48,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:48,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:48,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:48,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:48,044 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) [2021-06-12 18:52:48,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:48,179 INFO L93 Difference]: Finished difference Result 1409 states and 4234 transitions. [2021-06-12 18:52:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:48,180 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 [2021-06-12 18:52:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:48,181 INFO L225 Difference]: With dead ends: 1409 [2021-06-12 18:52:48,181 INFO L226 Difference]: Without dead ends: 1286 [2021-06-12 18:52:48,182 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-06-12 18:52:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1180. [2021-06-12 18:52:48,195 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) [2021-06-12 18:52:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3612 transitions. [2021-06-12 18:52:48,196 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3612 transitions. Word has length 26 [2021-06-12 18:52:48,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:48,196 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3612 transitions. [2021-06-12 18:52:48,197 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) [2021-06-12 18:52:48,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3612 transitions. [2021-06-12 18:52:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:48,198 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:48,198 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:48,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-12 18:52:48,198 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:48,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:48,199 INFO L82 PathProgramCache]: Analyzing trace with hash -657753510, now seen corresponding path program 33 times [2021-06-12 18:52:48,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:48,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343709963] [2021-06-12 18:52:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:48,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:48,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343709963] [2021-06-12 18:52:48,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343709963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:48,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:48,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:52:48,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419795675] [2021-06-12 18:52:48,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:52:48,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:48,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:52:48,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:48,252 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) [2021-06-12 18:52:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:48,362 INFO L93 Difference]: Finished difference Result 1516 states and 4589 transitions. [2021-06-12 18:52:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:52:48,363 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 [2021-06-12 18:52:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:48,365 INFO L225 Difference]: With dead ends: 1516 [2021-06-12 18:52:48,365 INFO L226 Difference]: Without dead ends: 1419 [2021-06-12 18:52:48,365 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-06-12 18:52:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1247. [2021-06-12 18:52:48,379 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) [2021-06-12 18:52:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3825 transitions. [2021-06-12 18:52:48,381 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3825 transitions. Word has length 26 [2021-06-12 18:52:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:48,381 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3825 transitions. [2021-06-12 18:52:48,381 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) [2021-06-12 18:52:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3825 transitions. [2021-06-12 18:52:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:48,383 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:48,383 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:48,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-12 18:52:48,383 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:48,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:48,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1566004646, now seen corresponding path program 34 times [2021-06-12 18:52:48,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:48,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906266711] [2021-06-12 18:52:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:48,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:48,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906266711] [2021-06-12 18:52:48,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906266711] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:48,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:48,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:48,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004507379] [2021-06-12 18:52:48,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:48,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:48,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:48,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:48,465 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) [2021-06-12 18:52:48,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:48,624 INFO L93 Difference]: Finished difference Result 1463 states and 4440 transitions. [2021-06-12 18:52:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:48,624 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 [2021-06-12 18:52:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:48,626 INFO L225 Difference]: With dead ends: 1463 [2021-06-12 18:52:48,626 INFO L226 Difference]: Without dead ends: 1384 [2021-06-12 18:52:48,627 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-06-12 18:52:48,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1263. [2021-06-12 18:52:48,641 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) [2021-06-12 18:52:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3875 transitions. [2021-06-12 18:52:48,643 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3875 transitions. Word has length 26 [2021-06-12 18:52:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:48,643 INFO L482 AbstractCegarLoop]: Abstraction has 1263 states and 3875 transitions. [2021-06-12 18:52:48,643 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) [2021-06-12 18:52:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3875 transitions. [2021-06-12 18:52:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:48,645 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:48,645 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:48,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-12 18:52:48,645 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash -696560038, now seen corresponding path program 35 times [2021-06-12 18:52:48,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:48,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550991037] [2021-06-12 18:52:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:48,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:48,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550991037] [2021-06-12 18:52:48,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550991037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:48,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:48,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:48,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756361745] [2021-06-12 18:52:48,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:48,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:48,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:48,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:48,701 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) [2021-06-12 18:52:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:48,858 INFO L93 Difference]: Finished difference Result 1486 states and 4488 transitions. [2021-06-12 18:52:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:48,859 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 [2021-06-12 18:52:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:48,861 INFO L225 Difference]: With dead ends: 1486 [2021-06-12 18:52:48,861 INFO L226 Difference]: Without dead ends: 1382 [2021-06-12 18:52:48,861 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-12 18:52:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1252. [2021-06-12 18:52:48,882 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) [2021-06-12 18:52:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3838 transitions. [2021-06-12 18:52:48,884 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3838 transitions. Word has length 26 [2021-06-12 18:52:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:48,884 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3838 transitions. [2021-06-12 18:52:48,884 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) [2021-06-12 18:52:48,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3838 transitions. [2021-06-12 18:52:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:48,886 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:48,886 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:48,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-12 18:52:48,886 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:48,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash -645428680, now seen corresponding path program 36 times [2021-06-12 18:52:48,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:48,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874491031] [2021-06-12 18:52:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:48,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:48,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874491031] [2021-06-12 18:52:48,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874491031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:48,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:48,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:48,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999284861] [2021-06-12 18:52:48,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:48,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:48,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:48,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:48,941 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) [2021-06-12 18:52:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:49,071 INFO L93 Difference]: Finished difference Result 1521 states and 4598 transitions. [2021-06-12 18:52:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:49,071 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 [2021-06-12 18:52:49,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:49,073 INFO L225 Difference]: With dead ends: 1521 [2021-06-12 18:52:49,073 INFO L226 Difference]: Without dead ends: 1427 [2021-06-12 18:52:49,076 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-06-12 18:52:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1240. [2021-06-12 18:52:49,091 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) [2021-06-12 18:52:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3803 transitions. [2021-06-12 18:52:49,093 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3803 transitions. Word has length 26 [2021-06-12 18:52:49,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:49,093 INFO L482 AbstractCegarLoop]: Abstraction has 1240 states and 3803 transitions. [2021-06-12 18:52:49,093 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) [2021-06-12 18:52:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3803 transitions. [2021-06-12 18:52:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:49,095 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:49,096 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:49,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-12 18:52:49,096 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:49,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:49,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1493519084, now seen corresponding path program 37 times [2021-06-12 18:52:49,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:49,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318188658] [2021-06-12 18:52:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:49,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:49,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318188658] [2021-06-12 18:52:49,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318188658] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:49,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:49,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:52:49,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701525570] [2021-06-12 18:52:49,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:52:49,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:49,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:52:49,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:52:49,140 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) [2021-06-12 18:52:49,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:49,239 INFO L93 Difference]: Finished difference Result 1472 states and 4446 transitions. [2021-06-12 18:52:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:52:49,239 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 [2021-06-12 18:52:49,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:49,241 INFO L225 Difference]: With dead ends: 1472 [2021-06-12 18:52:49,241 INFO L226 Difference]: Without dead ends: 1393 [2021-06-12 18:52:49,242 INFO L728 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 [2021-06-12 18:52:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-06-12 18:52:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1277. [2021-06-12 18:52:49,257 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) [2021-06-12 18:52:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3910 transitions. [2021-06-12 18:52:49,258 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3910 transitions. Word has length 26 [2021-06-12 18:52:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:49,259 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3910 transitions. [2021-06-12 18:52:49,259 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) [2021-06-12 18:52:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3910 transitions. [2021-06-12 18:52:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:49,260 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:49,260 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:49,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-12 18:52:49,261 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:49,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash -624074476, now seen corresponding path program 38 times [2021-06-12 18:52:49,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:49,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57773823] [2021-06-12 18:52:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:49,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:49,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57773823] [2021-06-12 18:52:49,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57773823] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:49,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:49,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:49,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778850308] [2021-06-12 18:52:49,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:49,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:49,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:49,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:49,311 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) [2021-06-12 18:52:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:49,465 INFO L93 Difference]: Finished difference Result 1553 states and 4668 transitions. [2021-06-12 18:52:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:49,465 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 [2021-06-12 18:52:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:49,467 INFO L225 Difference]: With dead ends: 1553 [2021-06-12 18:52:49,467 INFO L226 Difference]: Without dead ends: 1354 [2021-06-12 18:52:49,467 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:49,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-06-12 18:52:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1244. [2021-06-12 18:52:49,499 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) [2021-06-12 18:52:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3779 transitions. [2021-06-12 18:52:49,501 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3779 transitions. Word has length 26 [2021-06-12 18:52:49,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:49,501 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3779 transitions. [2021-06-12 18:52:49,501 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) [2021-06-12 18:52:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3779 transitions. [2021-06-12 18:52:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:49,503 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:49,503 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:49,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-12 18:52:49,503 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:49,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1264028982, now seen corresponding path program 39 times [2021-06-12 18:52:49,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:49,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802973830] [2021-06-12 18:52:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:49,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:49,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802973830] [2021-06-12 18:52:49,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802973830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:49,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:49,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:49,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596604165] [2021-06-12 18:52:49,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:49,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:49,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:49,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:49,561 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) [2021-06-12 18:52:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:49,699 INFO L93 Difference]: Finished difference Result 1430 states and 4297 transitions. [2021-06-12 18:52:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:49,700 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 [2021-06-12 18:52:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:49,702 INFO L225 Difference]: With dead ends: 1430 [2021-06-12 18:52:49,702 INFO L226 Difference]: Without dead ends: 1351 [2021-06-12 18:52:49,702 INFO L728 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 [2021-06-12 18:52:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-06-12 18:52:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1255. [2021-06-12 18:52:49,716 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) [2021-06-12 18:52:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3810 transitions. [2021-06-12 18:52:49,718 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3810 transitions. Word has length 26 [2021-06-12 18:52:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:49,718 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3810 transitions. [2021-06-12 18:52:49,718 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) [2021-06-12 18:52:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3810 transitions. [2021-06-12 18:52:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:49,719 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:49,720 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:49,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-12 18:52:49,720 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:49,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:49,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2133473590, now seen corresponding path program 40 times [2021-06-12 18:52:49,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:49,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248460029] [2021-06-12 18:52:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:49,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:49,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248460029] [2021-06-12 18:52:49,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248460029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:49,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:49,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:49,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608063367] [2021-06-12 18:52:49,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:49,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:49,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:49,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:49,782 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) [2021-06-12 18:52:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:49,916 INFO L93 Difference]: Finished difference Result 1537 states and 4623 transitions. [2021-06-12 18:52:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:49,917 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 [2021-06-12 18:52:49,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:49,918 INFO L225 Difference]: With dead ends: 1537 [2021-06-12 18:52:49,918 INFO L226 Difference]: Without dead ends: 1442 [2021-06-12 18:52:49,919 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-06-12 18:52:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1244. [2021-06-12 18:52:49,933 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) [2021-06-12 18:52:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3776 transitions. [2021-06-12 18:52:49,935 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3776 transitions. Word has length 26 [2021-06-12 18:52:49,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:49,935 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3776 transitions. [2021-06-12 18:52:49,935 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) [2021-06-12 18:52:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3776 transitions. [2021-06-12 18:52:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:49,937 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:49,937 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:49,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-12 18:52:49,937 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:49,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:49,937 INFO L82 PathProgramCache]: Analyzing trace with hash 9575344, now seen corresponding path program 41 times [2021-06-12 18:52:49,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:49,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370687081] [2021-06-12 18:52:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:49,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:49,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370687081] [2021-06-12 18:52:49,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370687081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:49,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:49,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:49,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896764295] [2021-06-12 18:52:49,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:49,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:49,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:49,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:49,999 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) [2021-06-12 18:52:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:50,124 INFO L93 Difference]: Finished difference Result 1525 states and 4571 transitions. [2021-06-12 18:52:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:50,125 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 [2021-06-12 18:52:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:50,127 INFO L225 Difference]: With dead ends: 1525 [2021-06-12 18:52:50,127 INFO L226 Difference]: Without dead ends: 1377 [2021-06-12 18:52:50,127 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-06-12 18:52:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1245. [2021-06-12 18:52:50,145 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) [2021-06-12 18:52:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3786 transitions. [2021-06-12 18:52:50,147 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3786 transitions. Word has length 26 [2021-06-12 18:52:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:50,147 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3786 transitions. [2021-06-12 18:52:50,147 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) [2021-06-12 18:52:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3786 transitions. [2021-06-12 18:52:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:50,149 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:50,149 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:50,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-12 18:52:50,149 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:50,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:50,149 INFO L82 PathProgramCache]: Analyzing trace with hash -886209770, now seen corresponding path program 42 times [2021-06-12 18:52:50,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:50,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891827599] [2021-06-12 18:52:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:50,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:50,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891827599] [2021-06-12 18:52:50,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891827599] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:50,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:50,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:50,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904904517] [2021-06-12 18:52:50,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:50,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:50,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:50,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:50,210 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) [2021-06-12 18:52:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:50,342 INFO L93 Difference]: Finished difference Result 1531 states and 4573 transitions. [2021-06-12 18:52:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:50,343 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 [2021-06-12 18:52:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:50,345 INFO L225 Difference]: With dead ends: 1531 [2021-06-12 18:52:50,345 INFO L226 Difference]: Without dead ends: 1401 [2021-06-12 18:52:50,345 INFO L728 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 [2021-06-12 18:52:50,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-06-12 18:52:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1297. [2021-06-12 18:52:50,359 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) [2021-06-12 18:52:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 3926 transitions. [2021-06-12 18:52:50,361 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 3926 transitions. Word has length 26 [2021-06-12 18:52:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:50,361 INFO L482 AbstractCegarLoop]: Abstraction has 1297 states and 3926 transitions. [2021-06-12 18:52:50,361 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) [2021-06-12 18:52:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 3926 transitions. [2021-06-12 18:52:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:50,363 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:50,363 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:50,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-12 18:52:50,363 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:50,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:50,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1745794764, now seen corresponding path program 43 times [2021-06-12 18:52:50,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:50,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879612442] [2021-06-12 18:52:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:50,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:50,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879612442] [2021-06-12 18:52:50,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879612442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:50,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:50,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:50,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008272974] [2021-06-12 18:52:50,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:50,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:50,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:50,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:50,423 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) [2021-06-12 18:52:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:50,630 INFO L93 Difference]: Finished difference Result 1518 states and 4526 transitions. [2021-06-12 18:52:50,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:50,631 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 [2021-06-12 18:52:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:50,633 INFO L225 Difference]: With dead ends: 1518 [2021-06-12 18:52:50,633 INFO L226 Difference]: Without dead ends: 1395 [2021-06-12 18:52:50,633 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:50,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-06-12 18:52:50,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1271. [2021-06-12 18:52:50,646 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) [2021-06-12 18:52:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 3860 transitions. [2021-06-12 18:52:50,648 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 3860 transitions. Word has length 26 [2021-06-12 18:52:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:50,648 INFO L482 AbstractCegarLoop]: Abstraction has 1271 states and 3860 transitions. [2021-06-12 18:52:50,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 3860 transitions. [2021-06-12 18:52:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:50,650 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:50,650 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:50,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-12 18:52:50,650 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:50,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:50,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1255815848, now seen corresponding path program 44 times [2021-06-12 18:52:50,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:50,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219942587] [2021-06-12 18:52:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:50,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:50,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219942587] [2021-06-12 18:52:50,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219942587] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:50,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:50,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:50,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751651585] [2021-06-12 18:52:50,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:50,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:50,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:50,707 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) [2021-06-12 18:52:50,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:50,850 INFO L93 Difference]: Finished difference Result 1636 states and 4901 transitions. [2021-06-12 18:52:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:50,850 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 [2021-06-12 18:52:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:50,852 INFO L225 Difference]: With dead ends: 1636 [2021-06-12 18:52:50,853 INFO L226 Difference]: Without dead ends: 1496 [2021-06-12 18:52:50,853 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-12 18:52:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1331. [2021-06-12 18:52:50,867 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) [2021-06-12 18:52:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 4038 transitions. [2021-06-12 18:52:50,869 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 4038 transitions. Word has length 26 [2021-06-12 18:52:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:50,869 INFO L482 AbstractCegarLoop]: Abstraction has 1331 states and 4038 transitions. [2021-06-12 18:52:50,869 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) [2021-06-12 18:52:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 4038 transitions. [2021-06-12 18:52:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:50,871 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:50,871 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:50,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-12 18:52:50,871 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:50,871 INFO L82 PathProgramCache]: Analyzing trace with hash -331772878, now seen corresponding path program 45 times [2021-06-12 18:52:50,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:50,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302655692] [2021-06-12 18:52:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:50,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:50,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302655692] [2021-06-12 18:52:50,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302655692] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:50,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:50,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:50,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315438371] [2021-06-12 18:52:50,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:50,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:50,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:50,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:50,929 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) [2021-06-12 18:52:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:51,096 INFO L93 Difference]: Finished difference Result 1514 states and 4527 transitions. [2021-06-12 18:52:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:51,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:51,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:51,098 INFO L225 Difference]: With dead ends: 1514 [2021-06-12 18:52:51,098 INFO L226 Difference]: Without dead ends: 1403 [2021-06-12 18:52:51,099 INFO L728 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 [2021-06-12 18:52:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-06-12 18:52:51,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1295. [2021-06-12 18:52:51,112 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) [2021-06-12 18:52:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 3921 transitions. [2021-06-12 18:52:51,114 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 3921 transitions. Word has length 26 [2021-06-12 18:52:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:51,114 INFO L482 AbstractCegarLoop]: Abstraction has 1295 states and 3921 transitions. [2021-06-12 18:52:51,114 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) [2021-06-12 18:52:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 3921 transitions. [2021-06-12 18:52:51,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:51,116 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:51,116 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:51,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-12 18:52:51,116 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:51,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:51,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1426900628, now seen corresponding path program 46 times [2021-06-12 18:52:51,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:51,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672969300] [2021-06-12 18:52:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:51,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:51,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672969300] [2021-06-12 18:52:51,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672969300] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:51,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:51,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:51,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030194825] [2021-06-12 18:52:51,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:51,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:51,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:51,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:51,175 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) [2021-06-12 18:52:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:51,346 INFO L93 Difference]: Finished difference Result 1453 states and 4342 transitions. [2021-06-12 18:52:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:51,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:51,348 INFO L225 Difference]: With dead ends: 1453 [2021-06-12 18:52:51,348 INFO L226 Difference]: Without dead ends: 1374 [2021-06-12 18:52:51,348 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2021-06-12 18:52:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1319. [2021-06-12 18:52:51,362 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) [2021-06-12 18:52:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 3994 transitions. [2021-06-12 18:52:51,364 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 3994 transitions. Word has length 26 [2021-06-12 18:52:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:51,364 INFO L482 AbstractCegarLoop]: Abstraction has 1319 states and 3994 transitions. [2021-06-12 18:52:51,364 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) [2021-06-12 18:52:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 3994 transitions. [2021-06-12 18:52:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:51,366 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:51,366 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:51,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-12 18:52:51,366 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:51,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1998622060, now seen corresponding path program 47 times [2021-06-12 18:52:51,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:51,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968050262] [2021-06-12 18:52:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:51,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:51,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968050262] [2021-06-12 18:52:51,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968050262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:51,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:51,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:51,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353870104] [2021-06-12 18:52:51,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:51,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:51,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:51,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:51,436 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) [2021-06-12 18:52:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:51,620 INFO L93 Difference]: Finished difference Result 1550 states and 4630 transitions. [2021-06-12 18:52:51,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:51,621 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 [2021-06-12 18:52:51,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:51,623 INFO L225 Difference]: With dead ends: 1550 [2021-06-12 18:52:51,623 INFO L226 Difference]: Without dead ends: 1455 [2021-06-12 18:52:51,623 INFO L728 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 [2021-06-12 18:52:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-12 18:52:51,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1323. [2021-06-12 18:52:51,640 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) [2021-06-12 18:52:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4007 transitions. [2021-06-12 18:52:51,643 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4007 transitions. Word has length 26 [2021-06-12 18:52:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:51,643 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4007 transitions. [2021-06-12 18:52:51,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4007 transitions. [2021-06-12 18:52:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:51,645 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:51,645 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:51,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-12 18:52:51,645 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash 827634006, now seen corresponding path program 48 times [2021-06-12 18:52:51,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:51,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360690930] [2021-06-12 18:52:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:51,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:51,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360690930] [2021-06-12 18:52:51,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360690930] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:51,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:51,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:51,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993999889] [2021-06-12 18:52:51,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:51,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:51,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:51,706 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) [2021-06-12 18:52:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:51,894 INFO L93 Difference]: Finished difference Result 1551 states and 4630 transitions. [2021-06-12 18:52:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:51,894 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 [2021-06-12 18:52:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:51,896 INFO L225 Difference]: With dead ends: 1551 [2021-06-12 18:52:51,896 INFO L226 Difference]: Without dead ends: 1472 [2021-06-12 18:52:51,896 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-06-12 18:52:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1327. [2021-06-12 18:52:51,910 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) [2021-06-12 18:52:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4015 transitions. [2021-06-12 18:52:51,912 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4015 transitions. Word has length 26 [2021-06-12 18:52:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:51,912 INFO L482 AbstractCegarLoop]: Abstraction has 1327 states and 4015 transitions. [2021-06-12 18:52:51,912 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) [2021-06-12 18:52:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4015 transitions. [2021-06-12 18:52:51,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:51,914 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:51,914 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:51,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-12 18:52:51,914 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:51,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:51,914 INFO L82 PathProgramCache]: Analyzing trace with hash 254236730, now seen corresponding path program 49 times [2021-06-12 18:52:51,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:51,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195837643] [2021-06-12 18:52:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:51,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:51,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195837643] [2021-06-12 18:52:51,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195837643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:51,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:51,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:51,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388382301] [2021-06-12 18:52:51,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:51,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:51,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:51,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:51,991 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) [2021-06-12 18:52:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:52,188 INFO L93 Difference]: Finished difference Result 1593 states and 4759 transitions. [2021-06-12 18:52:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:52,189 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 [2021-06-12 18:52:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:52,191 INFO L225 Difference]: With dead ends: 1593 [2021-06-12 18:52:52,191 INFO L226 Difference]: Without dead ends: 1491 [2021-06-12 18:52:52,191 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:52,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-06-12 18:52:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1313. [2021-06-12 18:52:52,205 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) [2021-06-12 18:52:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3985 transitions. [2021-06-12 18:52:52,206 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3985 transitions. Word has length 26 [2021-06-12 18:52:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:52,206 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3985 transitions. [2021-06-12 18:52:52,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3985 transitions. [2021-06-12 18:52:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:52,208 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:52,208 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:52,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-12 18:52:52,208 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:52,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2060169480, now seen corresponding path program 50 times [2021-06-12 18:52:52,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:52,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477583565] [2021-06-12 18:52:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:52,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:52,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477583565] [2021-06-12 18:52:52,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477583565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:52,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:52,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:52,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18373963] [2021-06-12 18:52:52,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:52,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:52,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:52,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:52,269 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) [2021-06-12 18:52:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:52,414 INFO L93 Difference]: Finished difference Result 1603 states and 4787 transitions. [2021-06-12 18:52:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:52,415 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 [2021-06-12 18:52:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:52,417 INFO L225 Difference]: With dead ends: 1603 [2021-06-12 18:52:52,417 INFO L226 Difference]: Without dead ends: 1453 [2021-06-12 18:52:52,417 INFO L728 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 [2021-06-12 18:52:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-12 18:52:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1339. [2021-06-12 18:52:52,431 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) [2021-06-12 18:52:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4059 transitions. [2021-06-12 18:52:52,433 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4059 transitions. Word has length 26 [2021-06-12 18:52:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:52,433 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4059 transitions. [2021-06-12 18:52:52,433 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) [2021-06-12 18:52:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4059 transitions. [2021-06-12 18:52:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:52,435 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:52,435 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:52,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-12 18:52:52,435 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:52,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:52,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1375212822, now seen corresponding path program 51 times [2021-06-12 18:52:52,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:52,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957234158] [2021-06-12 18:52:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:52,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:52,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957234158] [2021-06-12 18:52:52,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957234158] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:52,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:52,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:52,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491243396] [2021-06-12 18:52:52,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:52,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:52,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:52,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:52,506 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) [2021-06-12 18:52:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:52,662 INFO L93 Difference]: Finished difference Result 1564 states and 4681 transitions. [2021-06-12 18:52:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:52,662 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 [2021-06-12 18:52:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:52,664 INFO L225 Difference]: With dead ends: 1564 [2021-06-12 18:52:52,664 INFO L226 Difference]: Without dead ends: 1432 [2021-06-12 18:52:52,664 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:52,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-06-12 18:52:52,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1313. [2021-06-12 18:52:52,677 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) [2021-06-12 18:52:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3991 transitions. [2021-06-12 18:52:52,679 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3991 transitions. Word has length 26 [2021-06-12 18:52:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:52,679 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3991 transitions. [2021-06-12 18:52:52,679 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) [2021-06-12 18:52:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3991 transitions. [2021-06-12 18:52:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:52,681 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:52,681 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:52,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-12 18:52:52,681 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:52,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:52,682 INFO L82 PathProgramCache]: Analyzing trace with hash 2016989272, now seen corresponding path program 52 times [2021-06-12 18:52:52,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:52,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394748882] [2021-06-12 18:52:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:52,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:52,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394748882] [2021-06-12 18:52:52,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394748882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:52,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:52,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:52,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697890685] [2021-06-12 18:52:52,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:52,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:52,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:52,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:52,742 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) [2021-06-12 18:52:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:52,866 INFO L93 Difference]: Finished difference Result 1533 states and 4603 transitions. [2021-06-12 18:52:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:52,867 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 [2021-06-12 18:52:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:52,869 INFO L225 Difference]: With dead ends: 1533 [2021-06-12 18:52:52,869 INFO L226 Difference]: Without dead ends: 1436 [2021-06-12 18:52:52,869 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-06-12 18:52:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1330. [2021-06-12 18:52:52,883 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) [2021-06-12 18:52:52,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 4042 transitions. [2021-06-12 18:52:52,885 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 4042 transitions. Word has length 26 [2021-06-12 18:52:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:52,885 INFO L482 AbstractCegarLoop]: Abstraction has 1330 states and 4042 transitions. [2021-06-12 18:52:52,885 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) [2021-06-12 18:52:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 4042 transitions. [2021-06-12 18:52:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:52,886 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:52,887 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:52,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-12 18:52:52,887 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:52,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1108738136, now seen corresponding path program 53 times [2021-06-12 18:52:52,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:52,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419233821] [2021-06-12 18:52:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:52,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:52,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419233821] [2021-06-12 18:52:52,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419233821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:52,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:52,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:52,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273096895] [2021-06-12 18:52:52,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:52,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:52,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:52,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:52,948 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) [2021-06-12 18:52:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:53,115 INFO L93 Difference]: Finished difference Result 1540 states and 4628 transitions. [2021-06-12 18:52:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:53,115 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 [2021-06-12 18:52:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:53,117 INFO L225 Difference]: With dead ends: 1540 [2021-06-12 18:52:53,117 INFO L226 Difference]: Without dead ends: 1461 [2021-06-12 18:52:53,117 INFO L728 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 [2021-06-12 18:52:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-06-12 18:52:53,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1342. [2021-06-12 18:52:53,131 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) [2021-06-12 18:52:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4076 transitions. [2021-06-12 18:52:53,133 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4076 transitions. Word has length 26 [2021-06-12 18:52:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:53,133 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 4076 transitions. [2021-06-12 18:52:53,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4076 transitions. [2021-06-12 18:52:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:53,135 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:53,135 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:53,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-12 18:52:53,135 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:53,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:53,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1978182744, now seen corresponding path program 54 times [2021-06-12 18:52:53,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:53,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711647212] [2021-06-12 18:52:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:53,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:53,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711647212] [2021-06-12 18:52:53,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711647212] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:53,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:53,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:53,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129263840] [2021-06-12 18:52:53,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:53,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:53,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:53,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:53,207 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) [2021-06-12 18:52:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:53,367 INFO L93 Difference]: Finished difference Result 1587 states and 4770 transitions. [2021-06-12 18:52:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:53,368 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 [2021-06-12 18:52:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:53,370 INFO L225 Difference]: With dead ends: 1587 [2021-06-12 18:52:53,370 INFO L226 Difference]: Without dead ends: 1474 [2021-06-12 18:52:53,370 INFO L728 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 [2021-06-12 18:52:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-12 18:52:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1340. [2021-06-12 18:52:53,384 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) [2021-06-12 18:52:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4071 transitions. [2021-06-12 18:52:53,386 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4071 transitions. Word has length 26 [2021-06-12 18:52:53,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:53,386 INFO L482 AbstractCegarLoop]: Abstraction has 1340 states and 4071 transitions. [2021-06-12 18:52:53,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4071 transitions. [2021-06-12 18:52:53,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:53,388 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:53,388 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:53,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-12 18:52:53,388 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:53,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:53,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2029314102, now seen corresponding path program 55 times [2021-06-12 18:52:53,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:53,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90869561] [2021-06-12 18:52:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:53,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:53,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90869561] [2021-06-12 18:52:53,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90869561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:53,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:53,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:53,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99633971] [2021-06-12 18:52:53,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:53,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:53,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:53,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:53,453 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) [2021-06-12 18:52:53,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:53,632 INFO L93 Difference]: Finished difference Result 1550 states and 4655 transitions. [2021-06-12 18:52:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:53,633 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 [2021-06-12 18:52:53,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:53,635 INFO L225 Difference]: With dead ends: 1550 [2021-06-12 18:52:53,635 INFO L226 Difference]: Without dead ends: 1456 [2021-06-12 18:52:53,635 INFO L728 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 [2021-06-12 18:52:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-06-12 18:52:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1323. [2021-06-12 18:52:53,649 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) [2021-06-12 18:52:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4022 transitions. [2021-06-12 18:52:53,651 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4022 transitions. Word has length 26 [2021-06-12 18:52:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:53,651 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4022 transitions. [2021-06-12 18:52:53,651 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) [2021-06-12 18:52:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4022 transitions. [2021-06-12 18:52:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:53,653 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:53,653 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:53,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-12 18:52:53,653 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:53,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:53,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1520376882, now seen corresponding path program 56 times [2021-06-12 18:52:53,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:53,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411370014] [2021-06-12 18:52:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:53,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:53,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411370014] [2021-06-12 18:52:53,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411370014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:53,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:53,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:53,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343334821] [2021-06-12 18:52:53,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:53,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:53,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:53,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:53,712 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) [2021-06-12 18:52:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:53,862 INFO L93 Difference]: Finished difference Result 1614 states and 4865 transitions. [2021-06-12 18:52:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:53,862 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 [2021-06-12 18:52:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:53,864 INFO L225 Difference]: With dead ends: 1614 [2021-06-12 18:52:53,864 INFO L226 Difference]: Without dead ends: 1535 [2021-06-12 18:52:53,864 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:53,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-06-12 18:52:53,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1344. [2021-06-12 18:52:53,884 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) [2021-06-12 18:52:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4084 transitions. [2021-06-12 18:52:53,886 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4084 transitions. Word has length 26 [2021-06-12 18:52:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:53,886 INFO L482 AbstractCegarLoop]: Abstraction has 1344 states and 4084 transitions. [2021-06-12 18:52:53,887 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) [2021-06-12 18:52:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4084 transitions. [2021-06-12 18:52:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:53,888 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:53,888 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:53,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-12 18:52:53,888 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:53,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1551902662, now seen corresponding path program 57 times [2021-06-12 18:52:53,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:53,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123416072] [2021-06-12 18:52:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:53,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:53,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123416072] [2021-06-12 18:52:53,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123416072] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:53,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:53,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:53,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193270214] [2021-06-12 18:52:53,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:53,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:53,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:53,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:53,957 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) [2021-06-12 18:52:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:54,091 INFO L93 Difference]: Finished difference Result 1680 states and 5059 transitions. [2021-06-12 18:52:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:54,092 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 [2021-06-12 18:52:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:54,094 INFO L225 Difference]: With dead ends: 1680 [2021-06-12 18:52:54,094 INFO L226 Difference]: Without dead ends: 1585 [2021-06-12 18:52:54,094 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:54,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-06-12 18:52:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1362. [2021-06-12 18:52:54,108 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) [2021-06-12 18:52:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4144 transitions. [2021-06-12 18:52:54,110 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4144 transitions. Word has length 26 [2021-06-12 18:52:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:54,110 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 4144 transitions. [2021-06-12 18:52:54,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4144 transitions. [2021-06-12 18:52:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:54,111 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:54,112 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:54,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-12 18:52:54,112 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:54,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:54,112 INFO L82 PathProgramCache]: Analyzing trace with hash -48551660, now seen corresponding path program 58 times [2021-06-12 18:52:54,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:54,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232994366] [2021-06-12 18:52:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:54,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:54,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232994366] [2021-06-12 18:52:54,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232994366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:54,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:54,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:54,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3099953] [2021-06-12 18:52:54,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:54,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:54,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:54,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:54,163 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) [2021-06-12 18:52:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:54,288 INFO L93 Difference]: Finished difference Result 1581 states and 4769 transitions. [2021-06-12 18:52:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:54,288 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 [2021-06-12 18:52:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:54,291 INFO L225 Difference]: With dead ends: 1581 [2021-06-12 18:52:54,291 INFO L226 Difference]: Without dead ends: 1490 [2021-06-12 18:52:54,291 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-06-12 18:52:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1345. [2021-06-12 18:52:54,305 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) [2021-06-12 18:52:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4092 transitions. [2021-06-12 18:52:54,307 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4092 transitions. Word has length 26 [2021-06-12 18:52:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:54,307 INFO L482 AbstractCegarLoop]: Abstraction has 1345 states and 4092 transitions. [2021-06-12 18:52:54,307 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) [2021-06-12 18:52:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4092 transitions. [2021-06-12 18:52:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:54,309 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:54,309 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:54,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-12 18:52:54,309 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:54,309 INFO L82 PathProgramCache]: Analyzing trace with hash 205133460, now seen corresponding path program 59 times [2021-06-12 18:52:54,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:54,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471234698] [2021-06-12 18:52:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:54,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:54,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471234698] [2021-06-12 18:52:54,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471234698] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:54,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:54,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:54,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44032397] [2021-06-12 18:52:54,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:54,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:54,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:54,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:54,367 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) [2021-06-12 18:52:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:54,530 INFO L93 Difference]: Finished difference Result 1471 states and 4427 transitions. [2021-06-12 18:52:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:54,530 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 [2021-06-12 18:52:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:54,532 INFO L225 Difference]: With dead ends: 1471 [2021-06-12 18:52:54,533 INFO L226 Difference]: Without dead ends: 1392 [2021-06-12 18:52:54,533 INFO L728 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 [2021-06-12 18:52:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-06-12 18:52:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1357. [2021-06-12 18:52:54,547 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) [2021-06-12 18:52:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4126 transitions. [2021-06-12 18:52:54,549 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4126 transitions. Word has length 26 [2021-06-12 18:52:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:54,549 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 4126 transitions. [2021-06-12 18:52:54,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:54,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4126 transitions. [2021-06-12 18:52:54,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:54,550 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:54,550 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:54,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-12 18:52:54,551 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:54,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:54,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1074578068, now seen corresponding path program 60 times [2021-06-12 18:52:54,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:54,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664684699] [2021-06-12 18:52:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:54,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:54,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664684699] [2021-06-12 18:52:54,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664684699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:54,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:54,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:54,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54800359] [2021-06-12 18:52:54,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:54,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:54,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:54,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:54,617 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) [2021-06-12 18:52:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:54,780 INFO L93 Difference]: Finished difference Result 1521 states and 4567 transitions. [2021-06-12 18:52:54,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:54,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:54,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:54,782 INFO L225 Difference]: With dead ends: 1521 [2021-06-12 18:52:54,782 INFO L226 Difference]: Without dead ends: 1426 [2021-06-12 18:52:54,783 INFO L728 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 [2021-06-12 18:52:54,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-06-12 18:52:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1365. [2021-06-12 18:52:54,796 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) [2021-06-12 18:52:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4154 transitions. [2021-06-12 18:52:54,798 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4154 transitions. Word has length 26 [2021-06-12 18:52:54,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:54,798 INFO L482 AbstractCegarLoop]: Abstraction has 1365 states and 4154 transitions. [2021-06-12 18:52:54,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4154 transitions. [2021-06-12 18:52:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:54,799 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:54,799 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:54,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-12 18:52:54,799 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:54,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:54,800 INFO L82 PathProgramCache]: Analyzing trace with hash -394133162, now seen corresponding path program 61 times [2021-06-12 18:52:54,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:54,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127626508] [2021-06-12 18:52:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:54,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:54,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127626508] [2021-06-12 18:52:54,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127626508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:54,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:54,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:54,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853734522] [2021-06-12 18:52:54,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:54,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:54,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:54,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:54,866 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) [2021-06-12 18:52:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:55,048 INFO L93 Difference]: Finished difference Result 1567 states and 4715 transitions. [2021-06-12 18:52:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:55,049 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:55,051 INFO L225 Difference]: With dead ends: 1567 [2021-06-12 18:52:55,051 INFO L226 Difference]: Without dead ends: 1488 [2021-06-12 18:52:55,051 INFO L728 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 [2021-06-12 18:52:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-12 18:52:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1372. [2021-06-12 18:52:55,064 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) [2021-06-12 18:52:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4173 transitions. [2021-06-12 18:52:55,066 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4173 transitions. Word has length 26 [2021-06-12 18:52:55,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:55,066 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4173 transitions. [2021-06-12 18:52:55,066 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) [2021-06-12 18:52:55,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4173 transitions. [2021-06-12 18:52:55,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:55,068 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:55,068 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:55,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-12 18:52:55,068 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:55,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:55,068 INFO L82 PathProgramCache]: Analyzing trace with hash -967530438, now seen corresponding path program 62 times [2021-06-12 18:52:55,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:55,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795977129] [2021-06-12 18:52:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:55,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:55,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795977129] [2021-06-12 18:52:55,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795977129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:55,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:55,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:55,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094218510] [2021-06-12 18:52:55,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:55,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:55,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:55,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:55,130 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) [2021-06-12 18:52:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:55,302 INFO L93 Difference]: Finished difference Result 1591 states and 4779 transitions. [2021-06-12 18:52:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:55,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:55,305 INFO L225 Difference]: With dead ends: 1591 [2021-06-12 18:52:55,305 INFO L226 Difference]: Without dead ends: 1496 [2021-06-12 18:52:55,305 INFO L728 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 [2021-06-12 18:52:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-12 18:52:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1377. [2021-06-12 18:52:55,318 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) [2021-06-12 18:52:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4190 transitions. [2021-06-12 18:52:55,320 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 4190 transitions. Word has length 26 [2021-06-12 18:52:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:55,320 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 4190 transitions. [2021-06-12 18:52:55,320 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) [2021-06-12 18:52:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 4190 transitions. [2021-06-12 18:52:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:55,328 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:55,328 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:55,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-12 18:52:55,329 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash -380979590, now seen corresponding path program 63 times [2021-06-12 18:52:55,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:55,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961418484] [2021-06-12 18:52:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:55,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:55,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961418484] [2021-06-12 18:52:55,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961418484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:55,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:55,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:55,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136026000] [2021-06-12 18:52:55,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:55,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:55,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:55,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:55,409 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) [2021-06-12 18:52:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:55,579 INFO L93 Difference]: Finished difference Result 1579 states and 4742 transitions. [2021-06-12 18:52:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:55,580 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 [2021-06-12 18:52:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:55,582 INFO L225 Difference]: With dead ends: 1579 [2021-06-12 18:52:55,582 INFO L226 Difference]: Without dead ends: 1491 [2021-06-12 18:52:55,582 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-06-12 18:52:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1383. [2021-06-12 18:52:55,596 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) [2021-06-12 18:52:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4209 transitions. [2021-06-12 18:52:55,598 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4209 transitions. Word has length 26 [2021-06-12 18:52:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:55,598 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4209 transitions. [2021-06-12 18:52:55,598 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) [2021-06-12 18:52:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4209 transitions. [2021-06-12 18:52:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:55,599 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:55,599 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:55,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-12 18:52:55,600 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:55,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1093047432, now seen corresponding path program 64 times [2021-06-12 18:52:55,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:55,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476975317] [2021-06-12 18:52:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:55,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:55,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476975317] [2021-06-12 18:52:55,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476975317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:55,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:55,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:55,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359519475] [2021-06-12 18:52:55,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:55,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:55,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:55,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:55,664 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) [2021-06-12 18:52:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:55,832 INFO L93 Difference]: Finished difference Result 1558 states and 4681 transitions. [2021-06-12 18:52:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:55,832 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 [2021-06-12 18:52:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:55,834 INFO L225 Difference]: With dead ends: 1558 [2021-06-12 18:52:55,835 INFO L226 Difference]: Without dead ends: 1464 [2021-06-12 18:52:55,835 INFO L728 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 [2021-06-12 18:52:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-12 18:52:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1385. [2021-06-12 18:52:55,849 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) [2021-06-12 18:52:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 4217 transitions. [2021-06-12 18:52:55,851 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 4217 transitions. Word has length 26 [2021-06-12 18:52:55,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:55,851 INFO L482 AbstractCegarLoop]: Abstraction has 1385 states and 4217 transitions. [2021-06-12 18:52:55,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 4217 transitions. [2021-06-12 18:52:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:55,852 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:55,852 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:55,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-12 18:52:55,853 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:55,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:55,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1674506, now seen corresponding path program 65 times [2021-06-12 18:52:55,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:55,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088851814] [2021-06-12 18:52:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:55,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:55,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088851814] [2021-06-12 18:52:55,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088851814] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:55,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:55,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:55,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308003059] [2021-06-12 18:52:55,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:55,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:55,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:55,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:55,916 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) [2021-06-12 18:52:56,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:56,097 INFO L93 Difference]: Finished difference Result 1534 states and 4620 transitions. [2021-06-12 18:52:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:56,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:56,099 INFO L225 Difference]: With dead ends: 1534 [2021-06-12 18:52:56,100 INFO L226 Difference]: Without dead ends: 1455 [2021-06-12 18:52:56,100 INFO L728 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 [2021-06-12 18:52:56,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-12 18:52:56,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1391. [2021-06-12 18:52:56,129 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) [2021-06-12 18:52:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4240 transitions. [2021-06-12 18:52:56,131 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4240 transitions. Word has length 26 [2021-06-12 18:52:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:56,131 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4240 transitions. [2021-06-12 18:52:56,131 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) [2021-06-12 18:52:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4240 transitions. [2021-06-12 18:52:56,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:56,133 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:56,133 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:56,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-12 18:52:56,133 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:56,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash 867770102, now seen corresponding path program 66 times [2021-06-12 18:52:56,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:56,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758687978] [2021-06-12 18:52:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:56,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:56,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758687978] [2021-06-12 18:52:56,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758687978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:56,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:56,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:56,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93538211] [2021-06-12 18:52:56,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:56,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:56,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:56,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:56,194 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) [2021-06-12 18:52:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:56,363 INFO L93 Difference]: Finished difference Result 1569 states and 4729 transitions. [2021-06-12 18:52:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:56,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:56,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:56,366 INFO L225 Difference]: With dead ends: 1569 [2021-06-12 18:52:56,366 INFO L226 Difference]: Without dead ends: 1474 [2021-06-12 18:52:56,366 INFO L728 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 [2021-06-12 18:52:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-12 18:52:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1400. [2021-06-12 18:52:56,379 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) [2021-06-12 18:52:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4271 transitions. [2021-06-12 18:52:56,381 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4271 transitions. Word has length 26 [2021-06-12 18:52:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:56,381 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 4271 transitions. [2021-06-12 18:52:56,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4271 transitions. [2021-06-12 18:52:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:56,383 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:56,383 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:56,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-12 18:52:56,383 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:56,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1506513324, now seen corresponding path program 67 times [2021-06-12 18:52:56,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:56,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583451574] [2021-06-12 18:52:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:56,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:56,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583451574] [2021-06-12 18:52:56,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583451574] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:56,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:56,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:56,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554477650] [2021-06-12 18:52:56,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:56,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:56,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:56,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:56,446 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) [2021-06-12 18:52:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:56,613 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-06-12 18:52:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:56,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:56,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:56,615 INFO L225 Difference]: With dead ends: 1559 [2021-06-12 18:52:56,616 INFO L226 Difference]: Without dead ends: 1474 [2021-06-12 18:52:56,616 INFO L728 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 [2021-06-12 18:52:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-12 18:52:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1404. [2021-06-12 18:52:56,629 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) [2021-06-12 18:52:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4280 transitions. [2021-06-12 18:52:56,631 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4280 transitions. Word has length 26 [2021-06-12 18:52:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:56,632 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 4280 transitions. [2021-06-12 18:52:56,632 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) [2021-06-12 18:52:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4280 transitions. [2021-06-12 18:52:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:56,633 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:56,633 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:56,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-12 18:52:56,633 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash 613424368, now seen corresponding path program 68 times [2021-06-12 18:52:56,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:56,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601179284] [2021-06-12 18:52:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:56,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:56,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601179284] [2021-06-12 18:52:56,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601179284] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:56,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:56,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:56,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436744411] [2021-06-12 18:52:56,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:56,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:56,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:56,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:56,696 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) [2021-06-12 18:52:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:56,862 INFO L93 Difference]: Finished difference Result 1599 states and 4818 transitions. [2021-06-12 18:52:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:56,863 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:56,864 INFO L225 Difference]: With dead ends: 1599 [2021-06-12 18:52:56,865 INFO L226 Difference]: Without dead ends: 1496 [2021-06-12 18:52:56,865 INFO L728 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 [2021-06-12 18:52:56,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-12 18:52:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1402. [2021-06-12 18:52:56,885 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) [2021-06-12 18:52:56,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4280 transitions. [2021-06-12 18:52:56,887 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4280 transitions. Word has length 26 [2021-06-12 18:52:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:56,887 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 4280 transitions. [2021-06-12 18:52:56,887 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) [2021-06-12 18:52:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4280 transitions. [2021-06-12 18:52:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:56,889 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:56,889 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:56,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-12 18:52:56,889 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:56,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:56,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1118284984, now seen corresponding path program 69 times [2021-06-12 18:52:56,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:56,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564652723] [2021-06-12 18:52:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:56,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:56,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564652723] [2021-06-12 18:52:56,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564652723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:56,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:56,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:56,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147772086] [2021-06-12 18:52:56,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:56,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:56,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:56,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:56,946 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) [2021-06-12 18:52:57,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:57,121 INFO L93 Difference]: Finished difference Result 1713 states and 5194 transitions. [2021-06-12 18:52:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:57,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:57,124 INFO L225 Difference]: With dead ends: 1713 [2021-06-12 18:52:57,124 INFO L226 Difference]: Without dead ends: 1634 [2021-06-12 18:52:57,124 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-06-12 18:52:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1411. [2021-06-12 18:52:57,139 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) [2021-06-12 18:52:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4315 transitions. [2021-06-12 18:52:57,142 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4315 transitions. Word has length 26 [2021-06-12 18:52:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:57,142 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4315 transitions. [2021-06-12 18:52:57,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4315 transitions. [2021-06-12 18:52:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:57,143 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:57,143 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:57,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-12 18:52:57,143 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:57,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:57,144 INFO L82 PathProgramCache]: Analyzing trace with hash 544887708, now seen corresponding path program 70 times [2021-06-12 18:52:57,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:57,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758155757] [2021-06-12 18:52:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:57,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:57,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758155757] [2021-06-12 18:52:57,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758155757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:57,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:57,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:57,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112640625] [2021-06-12 18:52:57,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:57,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:57,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:57,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:57,221 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) [2021-06-12 18:52:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:57,397 INFO L93 Difference]: Finished difference Result 1734 states and 5229 transitions. [2021-06-12 18:52:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:57,397 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 [2021-06-12 18:52:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:57,399 INFO L225 Difference]: With dead ends: 1734 [2021-06-12 18:52:57,400 INFO L226 Difference]: Without dead ends: 1639 [2021-06-12 18:52:57,400 INFO L728 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 [2021-06-12 18:52:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-12 18:52:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1415. [2021-06-12 18:52:57,414 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) [2021-06-12 18:52:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4326 transitions. [2021-06-12 18:52:57,416 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4326 transitions. Word has length 26 [2021-06-12 18:52:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:57,416 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4326 transitions. [2021-06-12 18:52:57,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4326 transitions. [2021-06-12 18:52:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:57,418 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:57,418 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:57,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-12 18:52:57,418 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:57,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:57,418 INFO L82 PathProgramCache]: Analyzing trace with hash -273859562, now seen corresponding path program 71 times [2021-06-12 18:52:57,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:57,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886613660] [2021-06-12 18:52:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:57,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:57,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886613660] [2021-06-12 18:52:57,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886613660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:57,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:57,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:57,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78983046] [2021-06-12 18:52:57,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:57,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:57,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:57,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:57,478 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) [2021-06-12 18:52:57,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:57,657 INFO L93 Difference]: Finished difference Result 1641 states and 4975 transitions. [2021-06-12 18:52:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:57,657 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 [2021-06-12 18:52:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:57,660 INFO L225 Difference]: With dead ends: 1641 [2021-06-12 18:52:57,660 INFO L226 Difference]: Without dead ends: 1551 [2021-06-12 18:52:57,660 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-12 18:52:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1409. [2021-06-12 18:52:57,680 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) [2021-06-12 18:52:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 4311 transitions. [2021-06-12 18:52:57,682 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 4311 transitions. Word has length 26 [2021-06-12 18:52:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:57,683 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 4311 transitions. [2021-06-12 18:52:57,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 4311 transitions. [2021-06-12 18:52:57,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:57,684 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:57,684 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:57,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-12 18:52:57,684 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:57,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:57,685 INFO L82 PathProgramCache]: Analyzing trace with hash -648872902, now seen corresponding path program 72 times [2021-06-12 18:52:57,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:57,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707646933] [2021-06-12 18:52:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:57,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:57,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707646933] [2021-06-12 18:52:57,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707646933] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:57,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:57,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:57,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113648843] [2021-06-12 18:52:57,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:57,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:57,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:57,737 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) [2021-06-12 18:52:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:57,872 INFO L93 Difference]: Finished difference Result 1735 states and 5254 transitions. [2021-06-12 18:52:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:57,872 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 [2021-06-12 18:52:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:57,874 INFO L225 Difference]: With dead ends: 1735 [2021-06-12 18:52:57,874 INFO L226 Difference]: Without dead ends: 1656 [2021-06-12 18:52:57,875 INFO L728 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 [2021-06-12 18:52:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-06-12 18:52:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1445. [2021-06-12 18:52:57,889 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) [2021-06-12 18:52:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4418 transitions. [2021-06-12 18:52:57,891 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4418 transitions. Word has length 26 [2021-06-12 18:52:57,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:57,891 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4418 transitions. [2021-06-12 18:52:57,891 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) [2021-06-12 18:52:57,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4418 transitions. [2021-06-12 18:52:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:57,893 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:57,893 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:57,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-12 18:52:57,893 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash 220571706, now seen corresponding path program 73 times [2021-06-12 18:52:57,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:57,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773127210] [2021-06-12 18:52:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:57,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:57,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773127210] [2021-06-12 18:52:57,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773127210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:57,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:57,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:57,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686591192] [2021-06-12 18:52:57,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:57,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:57,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:57,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:57,954 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) [2021-06-12 18:52:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:58,113 INFO L93 Difference]: Finished difference Result 1792 states and 5392 transitions. [2021-06-12 18:52:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:58,115 INFO L225 Difference]: With dead ends: 1792 [2021-06-12 18:52:58,115 INFO L226 Difference]: Without dead ends: 1611 [2021-06-12 18:52:58,116 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-06-12 18:52:58,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1435. [2021-06-12 18:52:58,130 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) [2021-06-12 18:52:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 4394 transitions. [2021-06-12 18:52:58,132 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 4394 transitions. Word has length 26 [2021-06-12 18:52:58,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:58,132 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 4394 transitions. [2021-06-12 18:52:58,132 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) [2021-06-12 18:52:58,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 4394 transitions. [2021-06-12 18:52:58,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:58,134 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:58,134 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:58,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-12 18:52:58,134 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:58,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:58,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1928353624, now seen corresponding path program 74 times [2021-06-12 18:52:58,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:58,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918726440] [2021-06-12 18:52:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:58,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:58,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918726440] [2021-06-12 18:52:58,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918726440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:58,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:58,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:58,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125342085] [2021-06-12 18:52:58,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:58,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:58,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:58,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:58,198 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) [2021-06-12 18:52:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:58,362 INFO L93 Difference]: Finished difference Result 1663 states and 5025 transitions. [2021-06-12 18:52:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:58,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:58,365 INFO L225 Difference]: With dead ends: 1663 [2021-06-12 18:52:58,365 INFO L226 Difference]: Without dead ends: 1584 [2021-06-12 18:52:58,365 INFO L728 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 [2021-06-12 18:52:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-12 18:52:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1437. [2021-06-12 18:52:58,386 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) [2021-06-12 18:52:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4401 transitions. [2021-06-12 18:52:58,388 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4401 transitions. Word has length 26 [2021-06-12 18:52:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:58,388 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4401 transitions. [2021-06-12 18:52:58,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4401 transitions. [2021-06-12 18:52:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:58,391 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:58,391 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:58,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-12 18:52:58,391 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:58,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1497169064, now seen corresponding path program 75 times [2021-06-12 18:52:58,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:58,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498196194] [2021-06-12 18:52:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:58,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:58,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498196194] [2021-06-12 18:52:58,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498196194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:58,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:58,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:58,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403653150] [2021-06-12 18:52:58,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:58,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:58,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:58,453 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) [2021-06-12 18:52:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:58,626 INFO L93 Difference]: Finished difference Result 1626 states and 4884 transitions. [2021-06-12 18:52:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:58,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:58,628 INFO L225 Difference]: With dead ends: 1626 [2021-06-12 18:52:58,628 INFO L226 Difference]: Without dead ends: 1531 [2021-06-12 18:52:58,628 INFO L728 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 [2021-06-12 18:52:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-06-12 18:52:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1451. [2021-06-12 18:52:58,642 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) [2021-06-12 18:52:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4438 transitions. [2021-06-12 18:52:58,644 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4438 transitions. Word has length 26 [2021-06-12 18:52:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:58,644 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4438 transitions. [2021-06-12 18:52:58,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4438 transitions. [2021-06-12 18:52:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:58,646 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:58,646 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:58,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-12 18:52:58,646 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:58,646 INFO L82 PathProgramCache]: Analyzing trace with hash 755689726, now seen corresponding path program 76 times [2021-06-12 18:52:58,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:58,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191553864] [2021-06-12 18:52:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:58,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:58,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191553864] [2021-06-12 18:52:58,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191553864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:58,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:58,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:58,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152108153] [2021-06-12 18:52:58,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:58,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:58,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:58,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:58,697 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) [2021-06-12 18:52:58,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:58,833 INFO L93 Difference]: Finished difference Result 1742 states and 5269 transitions. [2021-06-12 18:52:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:58,833 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 [2021-06-12 18:52:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:58,835 INFO L225 Difference]: With dead ends: 1742 [2021-06-12 18:52:58,836 INFO L226 Difference]: Without dead ends: 1653 [2021-06-12 18:52:58,836 INFO L728 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 [2021-06-12 18:52:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-06-12 18:52:58,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1461. [2021-06-12 18:52:58,854 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) [2021-06-12 18:52:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-06-12 18:52:58,856 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-06-12 18:52:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:58,856 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-06-12 18:52:58,856 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) [2021-06-12 18:52:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-06-12 18:52:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:58,858 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:58,858 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:58,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-12 18:52:58,858 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1342240574, now seen corresponding path program 77 times [2021-06-12 18:52:58,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:58,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107615215] [2021-06-12 18:52:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:58,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:58,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107615215] [2021-06-12 18:52:58,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107615215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:58,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:58,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:58,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856277942] [2021-06-12 18:52:58,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:58,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:58,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:58,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:58,927 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) [2021-06-12 18:52:59,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:59,098 INFO L93 Difference]: Finished difference Result 1678 states and 5043 transitions. [2021-06-12 18:52:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:59,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:59,101 INFO L225 Difference]: With dead ends: 1678 [2021-06-12 18:52:59,101 INFO L226 Difference]: Without dead ends: 1590 [2021-06-12 18:52:59,101 INFO L728 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 [2021-06-12 18:52:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-06-12 18:52:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1461. [2021-06-12 18:52:59,125 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) [2021-06-12 18:52:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-06-12 18:52:59,127 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-06-12 18:52:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:59,127 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-06-12 18:52:59,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-06-12 18:52:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:59,129 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:59,129 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:59,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-12 18:52:59,129 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:59,130 INFO L82 PathProgramCache]: Analyzing trace with hash 630172732, now seen corresponding path program 78 times [2021-06-12 18:52:59,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:59,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808137248] [2021-06-12 18:52:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:59,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:59,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808137248] [2021-06-12 18:52:59,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808137248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:59,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:59,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:59,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691090667] [2021-06-12 18:52:59,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:59,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:59,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:59,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:59,243 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) [2021-06-12 18:52:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:59,411 INFO L93 Difference]: Finished difference Result 1816 states and 5475 transitions. [2021-06-12 18:52:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:59,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:59,413 INFO L225 Difference]: With dead ends: 1816 [2021-06-12 18:52:59,413 INFO L226 Difference]: Without dead ends: 1722 [2021-06-12 18:52:59,414 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-06-12 18:52:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1485. [2021-06-12 18:52:59,428 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) [2021-06-12 18:52:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4546 transitions. [2021-06-12 18:52:59,431 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4546 transitions. Word has length 26 [2021-06-12 18:52:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:59,431 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4546 transitions. [2021-06-12 18:52:59,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:52:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4546 transitions. [2021-06-12 18:52:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:59,432 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:59,432 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:59,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-12 18:52:59,433 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:59,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:59,433 INFO L82 PathProgramCache]: Analyzing trace with hash -333059278, now seen corresponding path program 79 times [2021-06-12 18:52:59,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:59,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574873208] [2021-06-12 18:52:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:59,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:59,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574873208] [2021-06-12 18:52:59,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574873208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:59,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:59,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:59,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437547010] [2021-06-12 18:52:59,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:59,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:59,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:59,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:59,504 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) [2021-06-12 18:52:59,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:59,641 INFO L93 Difference]: Finished difference Result 1851 states and 5576 transitions. [2021-06-12 18:52:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:52:59,642 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 [2021-06-12 18:52:59,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:59,644 INFO L225 Difference]: With dead ends: 1851 [2021-06-12 18:52:59,644 INFO L226 Difference]: Without dead ends: 1679 [2021-06-12 18:52:59,644 INFO L728 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 [2021-06-12 18:52:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-06-12 18:52:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1453. [2021-06-12 18:52:59,658 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) [2021-06-12 18:52:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 4436 transitions. [2021-06-12 18:52:59,660 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 4436 transitions. Word has length 26 [2021-06-12 18:52:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:59,661 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 4436 transitions. [2021-06-12 18:52:59,661 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) [2021-06-12 18:52:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 4436 transitions. [2021-06-12 18:52:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:59,662 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:59,662 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:59,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-12 18:52:59,662 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1912490924, now seen corresponding path program 80 times [2021-06-12 18:52:59,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:59,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843509984] [2021-06-12 18:52:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:59,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:59,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843509984] [2021-06-12 18:52:59,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843509984] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:59,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:59,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:52:59,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685852571] [2021-06-12 18:52:59,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:52:59,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:52:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:52:59,739 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) [2021-06-12 18:52:59,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:52:59,903 INFO L93 Difference]: Finished difference Result 1732 states and 5178 transitions. [2021-06-12 18:52:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:52:59,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:52:59,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:52:59,905 INFO L225 Difference]: With dead ends: 1732 [2021-06-12 18:52:59,905 INFO L226 Difference]: Without dead ends: 1593 [2021-06-12 18:52:59,905 INFO L728 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 [2021-06-12 18:52:59,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-06-12 18:52:59,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1443. [2021-06-12 18:52:59,919 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) [2021-06-12 18:52:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 4396 transitions. [2021-06-12 18:52:59,921 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 4396 transitions. Word has length 26 [2021-06-12 18:52:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:52:59,922 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 4396 transitions. [2021-06-12 18:52:59,922 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) [2021-06-12 18:52:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 4396 transitions. [2021-06-12 18:52:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:52:59,933 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:52:59,933 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:52:59,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-12 18:52:59,933 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:52:59,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:52:59,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1530014744, now seen corresponding path program 81 times [2021-06-12 18:52:59,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:52:59,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668973390] [2021-06-12 18:52:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:52:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:52:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:52:59,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:52:59,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668973390] [2021-06-12 18:52:59,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668973390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:52:59,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:52:59,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:52:59,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600326397] [2021-06-12 18:52:59,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:52:59,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:52:59,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:52:59,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:52:59,987 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) [2021-06-12 18:53:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:00,123 INFO L93 Difference]: Finished difference Result 1745 states and 5234 transitions. [2021-06-12 18:53:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:00,123 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 [2021-06-12 18:53:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:00,125 INFO L225 Difference]: With dead ends: 1745 [2021-06-12 18:53:00,125 INFO L226 Difference]: Without dead ends: 1660 [2021-06-12 18:53:00,125 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-12 18:53:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1481. [2021-06-12 18:53:00,142 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) [2021-06-12 18:53:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4515 transitions. [2021-06-12 18:53:00,144 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4515 transitions. Word has length 26 [2021-06-12 18:53:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:00,144 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4515 transitions. [2021-06-12 18:53:00,144 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) [2021-06-12 18:53:00,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4515 transitions. [2021-06-12 18:53:00,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:00,146 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:00,146 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:00,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-12 18:53:00,146 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:00,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:00,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1895507944, now seen corresponding path program 82 times [2021-06-12 18:53:00,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:00,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848274726] [2021-06-12 18:53:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:00,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:00,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848274726] [2021-06-12 18:53:00,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848274726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:00,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:00,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:00,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522003265] [2021-06-12 18:53:00,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:00,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:00,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:00,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:00,212 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) [2021-06-12 18:53:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:00,384 INFO L93 Difference]: Finished difference Result 1788 states and 5355 transitions. [2021-06-12 18:53:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:00,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:00,386 INFO L225 Difference]: With dead ends: 1788 [2021-06-12 18:53:00,386 INFO L226 Difference]: Without dead ends: 1595 [2021-06-12 18:53:00,387 INFO L728 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 [2021-06-12 18:53:00,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-06-12 18:53:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1441. [2021-06-12 18:53:00,402 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) [2021-06-12 18:53:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 4389 transitions. [2021-06-12 18:53:00,404 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 4389 transitions. Word has length 26 [2021-06-12 18:53:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:00,404 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 4389 transitions. [2021-06-12 18:53:00,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 4389 transitions. [2021-06-12 18:53:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:00,405 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:00,405 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:00,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-12 18:53:00,406 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:00,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1883568040, now seen corresponding path program 83 times [2021-06-12 18:53:00,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:00,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494255682] [2021-06-12 18:53:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:00,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:00,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494255682] [2021-06-12 18:53:00,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494255682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:00,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:00,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:00,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423693282] [2021-06-12 18:53:00,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:00,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:00,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:00,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:00,477 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) [2021-06-12 18:53:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:00,641 INFO L93 Difference]: Finished difference Result 1658 states and 4979 transitions. [2021-06-12 18:53:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:00,642 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 [2021-06-12 18:53:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:00,644 INFO L225 Difference]: With dead ends: 1658 [2021-06-12 18:53:00,644 INFO L226 Difference]: Without dead ends: 1573 [2021-06-12 18:53:00,644 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:00,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-12 18:53:00,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1444. [2021-06-12 18:53:00,658 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) [2021-06-12 18:53:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4397 transitions. [2021-06-12 18:53:00,660 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4397 transitions. Word has length 26 [2021-06-12 18:53:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:00,660 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4397 transitions. [2021-06-12 18:53:00,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4397 transitions. [2021-06-12 18:53:00,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:00,662 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:00,662 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:00,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-12 18:53:00,662 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1014123432, now seen corresponding path program 84 times [2021-06-12 18:53:00,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:00,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153042102] [2021-06-12 18:53:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:00,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:00,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153042102] [2021-06-12 18:53:00,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153042102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:00,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:00,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:00,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494402716] [2021-06-12 18:53:00,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:00,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:00,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:00,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:00,734 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) [2021-06-12 18:53:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:00,901 INFO L93 Difference]: Finished difference Result 1729 states and 5190 transitions. [2021-06-12 18:53:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:00,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:00,904 INFO L225 Difference]: With dead ends: 1729 [2021-06-12 18:53:00,904 INFO L226 Difference]: Without dead ends: 1634 [2021-06-12 18:53:00,904 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-06-12 18:53:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1464. [2021-06-12 18:53:00,918 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) [2021-06-12 18:53:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4456 transitions. [2021-06-12 18:53:00,920 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4456 transitions. Word has length 26 [2021-06-12 18:53:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:00,921 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4456 transitions. [2021-06-12 18:53:00,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:00,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4456 transitions. [2021-06-12 18:53:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:00,922 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:00,922 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:00,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-12 18:53:00,922 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:00,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:00,923 INFO L82 PathProgramCache]: Analyzing trace with hash -201920844, now seen corresponding path program 85 times [2021-06-12 18:53:00,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:00,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221662746] [2021-06-12 18:53:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:00,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:00,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221662746] [2021-06-12 18:53:00,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221662746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:00,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:00,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:00,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298026487] [2021-06-12 18:53:00,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:00,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:00,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:00,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:00,983 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) [2021-06-12 18:53:01,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:01,146 INFO L93 Difference]: Finished difference Result 1739 states and 5230 transitions. [2021-06-12 18:53:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:01,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:01,148 INFO L225 Difference]: With dead ends: 1739 [2021-06-12 18:53:01,148 INFO L226 Difference]: Without dead ends: 1609 [2021-06-12 18:53:01,149 INFO L728 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 [2021-06-12 18:53:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-06-12 18:53:01,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1469. [2021-06-12 18:53:01,163 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) [2021-06-12 18:53:01,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-06-12 18:53:01,165 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-06-12 18:53:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:01,165 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-06-12 18:53:01,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-06-12 18:53:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:01,167 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:01,167 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:01,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-12 18:53:01,167 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2091650058, now seen corresponding path program 86 times [2021-06-12 18:53:01,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:01,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032345870] [2021-06-12 18:53:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:01,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:01,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032345870] [2021-06-12 18:53:01,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032345870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:01,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:01,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:01,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091466078] [2021-06-12 18:53:01,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:01,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:01,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:01,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:01,241 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) [2021-06-12 18:53:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:01,417 INFO L93 Difference]: Finished difference Result 1598 states and 4788 transitions. [2021-06-12 18:53:01,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:01,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:01,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:01,419 INFO L225 Difference]: With dead ends: 1598 [2021-06-12 18:53:01,419 INFO L226 Difference]: Without dead ends: 1519 [2021-06-12 18:53:01,419 INFO L728 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 [2021-06-12 18:53:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-06-12 18:53:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1469. [2021-06-12 18:53:01,433 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) [2021-06-12 18:53:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-06-12 18:53:01,435 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-06-12 18:53:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:01,435 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-06-12 18:53:01,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-06-12 18:53:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:01,448 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:01,448 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:01,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-12 18:53:01,448 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:01,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:01,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1222205450, now seen corresponding path program 87 times [2021-06-12 18:53:01,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:01,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922326161] [2021-06-12 18:53:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:01,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:01,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922326161] [2021-06-12 18:53:01,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922326161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:01,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:01,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:01,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948910202] [2021-06-12 18:53:01,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:01,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:01,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:01,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:01,507 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) [2021-06-12 18:53:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:01,680 INFO L93 Difference]: Finished difference Result 1617 states and 4837 transitions. [2021-06-12 18:53:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:01,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:01,683 INFO L225 Difference]: With dead ends: 1617 [2021-06-12 18:53:01,683 INFO L226 Difference]: Without dead ends: 1522 [2021-06-12 18:53:01,683 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-12 18:53:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1471. [2021-06-12 18:53:01,697 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) [2021-06-12 18:53:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 4459 transitions. [2021-06-12 18:53:01,699 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 4459 transitions. Word has length 26 [2021-06-12 18:53:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:01,699 INFO L482 AbstractCegarLoop]: Abstraction has 1471 states and 4459 transitions. [2021-06-12 18:53:01,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 4459 transitions. [2021-06-12 18:53:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:01,701 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:01,701 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:01,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-12 18:53:01,701 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:01,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:01,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1604050616, now seen corresponding path program 88 times [2021-06-12 18:53:01,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:01,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171890490] [2021-06-12 18:53:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:01,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:01,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171890490] [2021-06-12 18:53:01,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171890490] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:01,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:01,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:01,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077548022] [2021-06-12 18:53:01,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:01,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:01,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:01,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:01,763 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) [2021-06-12 18:53:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:01,934 INFO L93 Difference]: Finished difference Result 1682 states and 5045 transitions. [2021-06-12 18:53:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:01,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:01,936 INFO L225 Difference]: With dead ends: 1682 [2021-06-12 18:53:01,936 INFO L226 Difference]: Without dead ends: 1603 [2021-06-12 18:53:01,936 INFO L728 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 [2021-06-12 18:53:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-06-12 18:53:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1470. [2021-06-12 18:53:01,951 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) [2021-06-12 18:53:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4455 transitions. [2021-06-12 18:53:01,953 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4455 transitions. Word has length 26 [2021-06-12 18:53:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:01,953 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4455 transitions. [2021-06-12 18:53:01,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4455 transitions. [2021-06-12 18:53:01,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:01,954 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:01,954 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:01,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-12 18:53:01,955 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:01,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1030653340, now seen corresponding path program 89 times [2021-06-12 18:53:01,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:01,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113701893] [2021-06-12 18:53:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:02,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:02,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113701893] [2021-06-12 18:53:02,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113701893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:02,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:02,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:02,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477602989] [2021-06-12 18:53:02,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:02,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:02,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:02,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:02,024 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) [2021-06-12 18:53:02,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:02,195 INFO L93 Difference]: Finished difference Result 1669 states and 5007 transitions. [2021-06-12 18:53:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:02,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:02,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:02,197 INFO L225 Difference]: With dead ends: 1669 [2021-06-12 18:53:02,197 INFO L226 Difference]: Without dead ends: 1580 [2021-06-12 18:53:02,197 INFO L728 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 [2021-06-12 18:53:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-06-12 18:53:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1469. [2021-06-12 18:53:02,218 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) [2021-06-12 18:53:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4449 transitions. [2021-06-12 18:53:02,220 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4449 transitions. Word has length 26 [2021-06-12 18:53:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:02,220 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4449 transitions. [2021-06-12 18:53:02,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4449 transitions. [2021-06-12 18:53:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:02,221 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:02,221 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:02,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-12 18:53:02,222 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:02,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:02,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1617204188, now seen corresponding path program 90 times [2021-06-12 18:53:02,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:02,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087499280] [2021-06-12 18:53:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:02,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:02,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087499280] [2021-06-12 18:53:02,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087499280] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:02,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:02,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:02,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023198851] [2021-06-12 18:53:02,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:02,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:02,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:02,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:02,282 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) [2021-06-12 18:53:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:02,457 INFO L93 Difference]: Finished difference Result 1654 states and 4951 transitions. [2021-06-12 18:53:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:02,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:02,459 INFO L225 Difference]: With dead ends: 1654 [2021-06-12 18:53:02,459 INFO L226 Difference]: Without dead ends: 1566 [2021-06-12 18:53:02,460 INFO L728 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 [2021-06-12 18:53:02,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-06-12 18:53:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1470. [2021-06-12 18:53:02,474 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) [2021-06-12 18:53:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4453 transitions. [2021-06-12 18:53:02,476 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4453 transitions. Word has length 26 [2021-06-12 18:53:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:02,476 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4453 transitions. [2021-06-12 18:53:02,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4453 transitions. [2021-06-12 18:53:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:02,477 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:02,477 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:02,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-12 18:53:02,478 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:02,478 INFO L82 PathProgramCache]: Analyzing trace with hash 905136346, now seen corresponding path program 91 times [2021-06-12 18:53:02,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:02,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601573751] [2021-06-12 18:53:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:02,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:02,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601573751] [2021-06-12 18:53:02,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601573751] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:02,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:02,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:02,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809284296] [2021-06-12 18:53:02,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:02,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:02,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:02,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:02,550 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) [2021-06-12 18:53:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:02,726 INFO L93 Difference]: Finished difference Result 1673 states and 4993 transitions. [2021-06-12 18:53:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:02,728 INFO L225 Difference]: With dead ends: 1673 [2021-06-12 18:53:02,728 INFO L226 Difference]: Without dead ends: 1579 [2021-06-12 18:53:02,729 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-12 18:53:02,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1475. [2021-06-12 18:53:02,743 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) [2021-06-12 18:53:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-06-12 18:53:02,746 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-06-12 18:53:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:02,746 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-06-12 18:53:02,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-06-12 18:53:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:02,747 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:02,747 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:02,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-12 18:53:02,747 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1996509272, now seen corresponding path program 92 times [2021-06-12 18:53:02,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:02,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872128137] [2021-06-12 18:53:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:02,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:02,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872128137] [2021-06-12 18:53:02,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872128137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:02,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:02,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:02,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695618365] [2021-06-12 18:53:02,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:02,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:02,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:02,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:02,819 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) [2021-06-12 18:53:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:02,993 INFO L93 Difference]: Finished difference Result 1627 states and 4876 transitions. [2021-06-12 18:53:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:02,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:02,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:02,995 INFO L225 Difference]: With dead ends: 1627 [2021-06-12 18:53:02,996 INFO L226 Difference]: Without dead ends: 1548 [2021-06-12 18:53:02,996 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:03,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-06-12 18:53:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1475. [2021-06-12 18:53:03,015 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) [2021-06-12 18:53:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-06-12 18:53:03,017 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-06-12 18:53:03,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:03,017 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-06-12 18:53:03,018 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) [2021-06-12 18:53:03,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-06-12 18:53:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:03,019 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:03,019 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:03,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-12 18:53:03,019 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:03,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:03,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1429013416, now seen corresponding path program 93 times [2021-06-12 18:53:03,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:03,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011726603] [2021-06-12 18:53:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:03,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:03,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011726603] [2021-06-12 18:53:03,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011726603] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:03,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:03,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:03,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679945678] [2021-06-12 18:53:03,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:03,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:03,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:03,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:03,091 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) [2021-06-12 18:53:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:03,265 INFO L93 Difference]: Finished difference Result 1646 states and 4929 transitions. [2021-06-12 18:53:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:03,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:03,268 INFO L225 Difference]: With dead ends: 1646 [2021-06-12 18:53:03,268 INFO L226 Difference]: Without dead ends: 1551 [2021-06-12 18:53:03,268 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-12 18:53:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1478. [2021-06-12 18:53:03,282 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) [2021-06-12 18:53:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4482 transitions. [2021-06-12 18:53:03,284 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4482 transitions. Word has length 26 [2021-06-12 18:53:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:03,284 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 4482 transitions. [2021-06-12 18:53:03,284 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) [2021-06-12 18:53:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4482 transitions. [2021-06-12 18:53:03,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:03,285 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:03,286 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:03,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-12 18:53:03,286 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:03,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:03,286 INFO L82 PathProgramCache]: Analyzing trace with hash 491670454, now seen corresponding path program 94 times [2021-06-12 18:53:03,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:03,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107713688] [2021-06-12 18:53:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:03,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:03,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107713688] [2021-06-12 18:53:03,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107713688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:03,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:03,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:03,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788768894] [2021-06-12 18:53:03,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:03,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:03,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:03,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:03,346 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) [2021-06-12 18:53:03,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:03,524 INFO L93 Difference]: Finished difference Result 1664 states and 4981 transitions. [2021-06-12 18:53:03,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:03,527 INFO L225 Difference]: With dead ends: 1664 [2021-06-12 18:53:03,527 INFO L226 Difference]: Without dead ends: 1579 [2021-06-12 18:53:03,527 INFO L728 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 [2021-06-12 18:53:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-12 18:53:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1477. [2021-06-12 18:53:03,541 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) [2021-06-12 18:53:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4475 transitions. [2021-06-12 18:53:03,543 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4475 transitions. Word has length 26 [2021-06-12 18:53:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:03,543 INFO L482 AbstractCegarLoop]: Abstraction has 1477 states and 4475 transitions. [2021-06-12 18:53:03,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4475 transitions. [2021-06-12 18:53:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:03,544 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:03,544 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:03,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-12 18:53:03,545 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:03,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1683359150, now seen corresponding path program 95 times [2021-06-12 18:53:03,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:03,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635772076] [2021-06-12 18:53:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:03,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:03,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635772076] [2021-06-12 18:53:03,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635772076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:03,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:03,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:03,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898799717] [2021-06-12 18:53:03,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:03,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:03,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:03,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:03,608 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) [2021-06-12 18:53:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:03,790 INFO L93 Difference]: Finished difference Result 1654 states and 4965 transitions. [2021-06-12 18:53:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:03,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:03,792 INFO L225 Difference]: With dead ends: 1654 [2021-06-12 18:53:03,792 INFO L226 Difference]: Without dead ends: 1554 [2021-06-12 18:53:03,792 INFO L728 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 [2021-06-12 18:53:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-06-12 18:53:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1475. [2021-06-12 18:53:03,806 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) [2021-06-12 18:53:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4473 transitions. [2021-06-12 18:53:03,808 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4473 transitions. Word has length 26 [2021-06-12 18:53:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:03,808 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4473 transitions. [2021-06-12 18:53:03,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4473 transitions. [2021-06-12 18:53:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:03,810 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:03,810 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:03,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-12 18:53:03,810 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:03,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:03,810 INFO L82 PathProgramCache]: Analyzing trace with hash 553881150, now seen corresponding path program 96 times [2021-06-12 18:53:03,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:03,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695400114] [2021-06-12 18:53:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:03,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:03,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695400114] [2021-06-12 18:53:03,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695400114] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:03,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:03,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:03,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881201093] [2021-06-12 18:53:03,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:03,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:03,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:03,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:03,873 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) [2021-06-12 18:53:04,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:04,040 INFO L93 Difference]: Finished difference Result 1649 states and 4952 transitions. [2021-06-12 18:53:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:04,041 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 [2021-06-12 18:53:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:04,043 INFO L225 Difference]: With dead ends: 1649 [2021-06-12 18:53:04,043 INFO L226 Difference]: Without dead ends: 1561 [2021-06-12 18:53:04,043 INFO L728 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 [2021-06-12 18:53:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-06-12 18:53:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1481. [2021-06-12 18:53:04,057 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) [2021-06-12 18:53:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4491 transitions. [2021-06-12 18:53:04,060 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4491 transitions. Word has length 26 [2021-06-12 18:53:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:04,060 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4491 transitions. [2021-06-12 18:53:04,060 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) [2021-06-12 18:53:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4491 transitions. [2021-06-12 18:53:04,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:04,061 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:04,061 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:04,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-12 18:53:04,062 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:04,062 INFO L82 PathProgramCache]: Analyzing trace with hash -158186692, now seen corresponding path program 97 times [2021-06-12 18:53:04,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:04,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013022787] [2021-06-12 18:53:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:04,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:04,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013022787] [2021-06-12 18:53:04,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013022787] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:04,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:04,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:04,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96762562] [2021-06-12 18:53:04,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:04,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:04,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:04,130 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) [2021-06-12 18:53:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:04,298 INFO L93 Difference]: Finished difference Result 1675 states and 4997 transitions. [2021-06-12 18:53:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:04,299 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 [2021-06-12 18:53:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:04,301 INFO L225 Difference]: With dead ends: 1675 [2021-06-12 18:53:04,301 INFO L226 Difference]: Without dead ends: 1583 [2021-06-12 18:53:04,301 INFO L728 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 [2021-06-12 18:53:04,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-06-12 18:53:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1479. [2021-06-12 18:53:04,315 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) [2021-06-12 18:53:04,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4480 transitions. [2021-06-12 18:53:04,317 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4480 transitions. Word has length 26 [2021-06-12 18:53:04,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:04,318 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 4480 transitions. [2021-06-12 18:53:04,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:04,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4480 transitions. [2021-06-12 18:53:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:04,319 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:04,319 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:04,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-12 18:53:04,319 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:04,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash -838263396, now seen corresponding path program 98 times [2021-06-12 18:53:04,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:04,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444741433] [2021-06-12 18:53:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:04,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:04,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444741433] [2021-06-12 18:53:04,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444741433] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:04,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:04,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:04,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409331717] [2021-06-12 18:53:04,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:04,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:04,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:04,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:04,381 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) [2021-06-12 18:53:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:04,559 INFO L93 Difference]: Finished difference Result 1599 states and 4788 transitions. [2021-06-12 18:53:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:04,559 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 [2021-06-12 18:53:04,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:04,561 INFO L225 Difference]: With dead ends: 1599 [2021-06-12 18:53:04,562 INFO L226 Difference]: Without dead ends: 1480 [2021-06-12 18:53:04,562 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-12 18:53:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1444. [2021-06-12 18:53:04,578 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) [2021-06-12 18:53:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4393 transitions. [2021-06-12 18:53:04,580 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4393 transitions. Word has length 26 [2021-06-12 18:53:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:04,581 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4393 transitions. [2021-06-12 18:53:04,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4393 transitions. [2021-06-12 18:53:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:04,582 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:04,582 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:04,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-12 18:53:04,582 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2101954, now seen corresponding path program 99 times [2021-06-12 18:53:04,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:04,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095377787] [2021-06-12 18:53:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:04,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:04,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095377787] [2021-06-12 18:53:04,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095377787] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:04,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:04,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:53:04,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662634389] [2021-06-12 18:53:04,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:53:04,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:04,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:53:04,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:53:04,634 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) [2021-06-12 18:53:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:04,748 INFO L93 Difference]: Finished difference Result 1798 states and 5382 transitions. [2021-06-12 18:53:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:53:04,748 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 [2021-06-12 18:53:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:04,751 INFO L225 Difference]: With dead ends: 1798 [2021-06-12 18:53:04,751 INFO L226 Difference]: Without dead ends: 1641 [2021-06-12 18:53:04,751 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:53:04,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-12 18:53:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1518. [2021-06-12 18:53:04,770 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) [2021-06-12 18:53:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4611 transitions. [2021-06-12 18:53:04,772 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4611 transitions. Word has length 26 [2021-06-12 18:53:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:04,772 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4611 transitions. [2021-06-12 18:53:04,773 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) [2021-06-12 18:53:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4611 transitions. [2021-06-12 18:53:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:04,774 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:04,774 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:04,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-12 18:53:04,774 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:04,774 INFO L82 PathProgramCache]: Analyzing trace with hash -861686948, now seen corresponding path program 100 times [2021-06-12 18:53:04,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:04,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257780173] [2021-06-12 18:53:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:04,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:04,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257780173] [2021-06-12 18:53:04,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257780173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:04,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:04,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:04,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758630346] [2021-06-12 18:53:04,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:04,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:04,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:04,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:04,829 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) [2021-06-12 18:53:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:04,959 INFO L93 Difference]: Finished difference Result 1800 states and 5385 transitions. [2021-06-12 18:53:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:04,959 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 [2021-06-12 18:53:04,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:04,961 INFO L225 Difference]: With dead ends: 1800 [2021-06-12 18:53:04,961 INFO L226 Difference]: Without dead ends: 1650 [2021-06-12 18:53:04,961 INFO L728 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 [2021-06-12 18:53:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-06-12 18:53:04,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1502. [2021-06-12 18:53:04,976 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) [2021-06-12 18:53:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4569 transitions. [2021-06-12 18:53:04,978 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4569 transitions. Word has length 26 [2021-06-12 18:53:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:04,978 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4569 transitions. [2021-06-12 18:53:04,978 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) [2021-06-12 18:53:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4569 transitions. [2021-06-12 18:53:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:04,979 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:04,979 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:04,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-12 18:53:04,980 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:04,980 INFO L82 PathProgramCache]: Analyzing trace with hash -371708032, now seen corresponding path program 101 times [2021-06-12 18:53:04,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:04,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038324189] [2021-06-12 18:53:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:05,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:05,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038324189] [2021-06-12 18:53:05,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038324189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:05,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:05,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:05,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439820427] [2021-06-12 18:53:05,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:05,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:05,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:05,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:05,027 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) [2021-06-12 18:53:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:05,153 INFO L93 Difference]: Finished difference Result 1960 states and 5843 transitions. [2021-06-12 18:53:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:05,154 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 [2021-06-12 18:53:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:05,156 INFO L225 Difference]: With dead ends: 1960 [2021-06-12 18:53:05,156 INFO L226 Difference]: Without dead ends: 1674 [2021-06-12 18:53:05,156 INFO L728 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 [2021-06-12 18:53:05,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-06-12 18:53:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1624. [2021-06-12 18:53:05,172 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) [2021-06-12 18:53:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4866 transitions. [2021-06-12 18:53:05,174 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4866 transitions. Word has length 26 [2021-06-12 18:53:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:05,174 INFO L482 AbstractCegarLoop]: Abstraction has 1624 states and 4866 transitions. [2021-06-12 18:53:05,174 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) [2021-06-12 18:53:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4866 transitions. [2021-06-12 18:53:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:05,176 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:05,176 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:05,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-12 18:53:05,176 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:05,176 INFO L82 PathProgramCache]: Analyzing trace with hash 552334938, now seen corresponding path program 102 times [2021-06-12 18:53:05,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:05,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433254174] [2021-06-12 18:53:05,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:05,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:05,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433254174] [2021-06-12 18:53:05,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433254174] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:05,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:05,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:05,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522401390] [2021-06-12 18:53:05,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:05,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:05,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:05,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:05,233 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) [2021-06-12 18:53:05,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:05,392 INFO L93 Difference]: Finished difference Result 1845 states and 5416 transitions. [2021-06-12 18:53:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:05,392 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 [2021-06-12 18:53:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:05,394 INFO L225 Difference]: With dead ends: 1845 [2021-06-12 18:53:05,394 INFO L226 Difference]: Without dead ends: 1600 [2021-06-12 18:53:05,395 INFO L728 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 [2021-06-12 18:53:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-06-12 18:53:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1516. [2021-06-12 18:53:05,422 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) [2021-06-12 18:53:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4482 transitions. [2021-06-12 18:53:05,424 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4482 transitions. Word has length 26 [2021-06-12 18:53:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:05,424 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 4482 transitions. [2021-06-12 18:53:05,424 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) [2021-06-12 18:53:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4482 transitions. [2021-06-12 18:53:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:05,426 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:05,426 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:05,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-12 18:53:05,426 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:05,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1983958852, now seen corresponding path program 103 times [2021-06-12 18:53:05,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:05,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340990068] [2021-06-12 18:53:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:05,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:05,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340990068] [2021-06-12 18:53:05,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340990068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:05,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:05,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:05,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480887735] [2021-06-12 18:53:05,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:05,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:05,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:05,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:05,499 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) [2021-06-12 18:53:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:05,659 INFO L93 Difference]: Finished difference Result 1776 states and 5183 transitions. [2021-06-12 18:53:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:05,659 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 [2021-06-12 18:53:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:05,662 INFO L225 Difference]: With dead ends: 1776 [2021-06-12 18:53:05,662 INFO L226 Difference]: Without dead ends: 1640 [2021-06-12 18:53:05,662 INFO L728 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 [2021-06-12 18:53:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-06-12 18:53:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1518. [2021-06-12 18:53:05,676 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) [2021-06-12 18:53:05,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4481 transitions. [2021-06-12 18:53:05,678 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4481 transitions. Word has length 26 [2021-06-12 18:53:05,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:05,678 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4481 transitions. [2021-06-12 18:53:05,678 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) [2021-06-12 18:53:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4481 transitions. [2021-06-12 18:53:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:05,680 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:05,680 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:05,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-12 18:53:05,680 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1711741822, now seen corresponding path program 104 times [2021-06-12 18:53:05,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:05,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35262086] [2021-06-12 18:53:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:05,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:05,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35262086] [2021-06-12 18:53:05,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35262086] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:05,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:05,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:05,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589728771] [2021-06-12 18:53:05,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:05,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:05,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:05,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:05,740 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) [2021-06-12 18:53:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:05,901 INFO L93 Difference]: Finished difference Result 1746 states and 5066 transitions. [2021-06-12 18:53:05,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:05,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:05,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:05,903 INFO L225 Difference]: With dead ends: 1746 [2021-06-12 18:53:05,903 INFO L226 Difference]: Without dead ends: 1617 [2021-06-12 18:53:05,903 INFO L728 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 [2021-06-12 18:53:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-06-12 18:53:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1514. [2021-06-12 18:53:05,917 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) [2021-06-12 18:53:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4470 transitions. [2021-06-12 18:53:05,920 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4470 transitions. Word has length 26 [2021-06-12 18:53:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:05,920 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4470 transitions. [2021-06-12 18:53:05,920 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) [2021-06-12 18:53:05,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4470 transitions. [2021-06-12 18:53:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:05,921 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:05,921 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:05,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-12 18:53:05,921 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:05,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1138344546, now seen corresponding path program 105 times [2021-06-12 18:53:05,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:05,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498509463] [2021-06-12 18:53:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:05,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:05,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498509463] [2021-06-12 18:53:05,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498509463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:05,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:05,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:05,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066817834] [2021-06-12 18:53:05,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:05,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:05,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:05,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:05,988 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) [2021-06-12 18:53:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:06,148 INFO L93 Difference]: Finished difference Result 1698 states and 4924 transitions. [2021-06-12 18:53:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:06,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:06,151 INFO L225 Difference]: With dead ends: 1698 [2021-06-12 18:53:06,151 INFO L226 Difference]: Without dead ends: 1552 [2021-06-12 18:53:06,151 INFO L728 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 [2021-06-12 18:53:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-06-12 18:53:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1502. [2021-06-12 18:53:06,164 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) [2021-06-12 18:53:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4439 transitions. [2021-06-12 18:53:06,167 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4439 transitions. Word has length 26 [2021-06-12 18:53:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:06,167 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4439 transitions. [2021-06-12 18:53:06,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4439 transitions. [2021-06-12 18:53:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:06,168 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:06,168 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:06,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-12 18:53:06,168 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1141733984, now seen corresponding path program 106 times [2021-06-12 18:53:06,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:06,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469775366] [2021-06-12 18:53:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:06,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:06,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469775366] [2021-06-12 18:53:06,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469775366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:06,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:06,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:06,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883565249] [2021-06-12 18:53:06,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:06,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:06,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:06,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:06,235 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) [2021-06-12 18:53:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:06,400 INFO L93 Difference]: Finished difference Result 1727 states and 5036 transitions. [2021-06-12 18:53:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:06,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:06,403 INFO L225 Difference]: With dead ends: 1727 [2021-06-12 18:53:06,403 INFO L226 Difference]: Without dead ends: 1598 [2021-06-12 18:53:06,403 INFO L728 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 [2021-06-12 18:53:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-12 18:53:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1526. [2021-06-12 18:53:06,417 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) [2021-06-12 18:53:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 4505 transitions. [2021-06-12 18:53:06,419 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 4505 transitions. Word has length 26 [2021-06-12 18:53:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:06,419 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 4505 transitions. [2021-06-12 18:53:06,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:06,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 4505 transitions. [2021-06-12 18:53:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:06,421 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:06,421 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:06,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-12 18:53:06,421 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:06,421 INFO L82 PathProgramCache]: Analyzing trace with hash 568336708, now seen corresponding path program 107 times [2021-06-12 18:53:06,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:06,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233304959] [2021-06-12 18:53:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:06,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:06,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233304959] [2021-06-12 18:53:06,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233304959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:06,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:06,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:06,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842924733] [2021-06-12 18:53:06,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:06,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:06,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:06,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:06,493 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) [2021-06-12 18:53:06,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:06,660 INFO L93 Difference]: Finished difference Result 1850 states and 5404 transitions. [2021-06-12 18:53:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:06,662 INFO L225 Difference]: With dead ends: 1850 [2021-06-12 18:53:06,662 INFO L226 Difference]: Without dead ends: 1689 [2021-06-12 18:53:06,662 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-06-12 18:53:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1590. [2021-06-12 18:53:06,678 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) [2021-06-12 18:53:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 4683 transitions. [2021-06-12 18:53:06,681 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 4683 transitions. Word has length 26 [2021-06-12 18:53:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:06,681 INFO L482 AbstractCegarLoop]: Abstraction has 1590 states and 4683 transitions. [2021-06-12 18:53:06,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:06,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 4683 transitions. [2021-06-12 18:53:06,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:06,682 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:06,683 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:06,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-12 18:53:06,683 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:06,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:06,683 INFO L82 PathProgramCache]: Analyzing trace with hash 442819714, now seen corresponding path program 108 times [2021-06-12 18:53:06,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:06,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635769999] [2021-06-12 18:53:06,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:06,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:06,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635769999] [2021-06-12 18:53:06,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635769999] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:06,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:06,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:06,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986243863] [2021-06-12 18:53:06,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:06,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:06,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:06,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:06,755 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) [2021-06-12 18:53:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:06,921 INFO L93 Difference]: Finished difference Result 1788 states and 5178 transitions. [2021-06-12 18:53:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:06,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:06,923 INFO L225 Difference]: With dead ends: 1788 [2021-06-12 18:53:06,923 INFO L226 Difference]: Without dead ends: 1636 [2021-06-12 18:53:06,923 INFO L728 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 [2021-06-12 18:53:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-12 18:53:06,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1524. [2021-06-12 18:53:06,937 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) [2021-06-12 18:53:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4494 transitions. [2021-06-12 18:53:06,939 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4494 transitions. Word has length 26 [2021-06-12 18:53:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:06,939 INFO L482 AbstractCegarLoop]: Abstraction has 1524 states and 4494 transitions. [2021-06-12 18:53:06,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4494 transitions. [2021-06-12 18:53:06,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:06,941 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:06,941 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:06,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-12 18:53:06,941 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1608572506, now seen corresponding path program 109 times [2021-06-12 18:53:06,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:06,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148244451] [2021-06-12 18:53:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:07,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:07,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148244451] [2021-06-12 18:53:07,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148244451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:07,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:07,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:07,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661044310] [2021-06-12 18:53:07,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:07,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:07,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:07,002 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) [2021-06-12 18:53:07,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:07,160 INFO L93 Difference]: Finished difference Result 1802 states and 5245 transitions. [2021-06-12 18:53:07,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:07,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:07,162 INFO L225 Difference]: With dead ends: 1802 [2021-06-12 18:53:07,162 INFO L226 Difference]: Without dead ends: 1586 [2021-06-12 18:53:07,162 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:07,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-06-12 18:53:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1464. [2021-06-12 18:53:07,176 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) [2021-06-12 18:53:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4318 transitions. [2021-06-12 18:53:07,178 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4318 transitions. Word has length 26 [2021-06-12 18:53:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:07,178 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4318 transitions. [2021-06-12 18:53:07,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4318 transitions. [2021-06-12 18:53:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:07,179 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:07,179 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:07,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-12 18:53:07,180 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:07,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:07,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2030139044, now seen corresponding path program 110 times [2021-06-12 18:53:07,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:07,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568283955] [2021-06-12 18:53:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:07,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:07,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568283955] [2021-06-12 18:53:07,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568283955] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:07,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:07,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:07,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42097164] [2021-06-12 18:53:07,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:07,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:07,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:07,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:07,239 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) [2021-06-12 18:53:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:07,374 INFO L93 Difference]: Finished difference Result 1765 states and 5135 transitions. [2021-06-12 18:53:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:07,374 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 [2021-06-12 18:53:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:07,376 INFO L225 Difference]: With dead ends: 1765 [2021-06-12 18:53:07,377 INFO L226 Difference]: Without dead ends: 1626 [2021-06-12 18:53:07,377 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-06-12 18:53:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1511. [2021-06-12 18:53:07,391 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) [2021-06-12 18:53:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4436 transitions. [2021-06-12 18:53:07,394 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4436 transitions. Word has length 26 [2021-06-12 18:53:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:07,394 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 4436 transitions. [2021-06-12 18:53:07,394 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) [2021-06-12 18:53:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4436 transitions. [2021-06-12 18:53:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:07,395 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:07,395 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:07,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-12 18:53:07,395 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:07,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:07,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1405243258, now seen corresponding path program 111 times [2021-06-12 18:53:07,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:07,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882923342] [2021-06-12 18:53:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:07,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:07,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882923342] [2021-06-12 18:53:07,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882923342] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:07,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:07,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:07,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531883707] [2021-06-12 18:53:07,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:07,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:07,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:07,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:07,466 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) [2021-06-12 18:53:07,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:07,625 INFO L93 Difference]: Finished difference Result 1727 states and 5019 transitions. [2021-06-12 18:53:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:07,625 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 [2021-06-12 18:53:07,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:07,627 INFO L225 Difference]: With dead ends: 1727 [2021-06-12 18:53:07,628 INFO L226 Difference]: Without dead ends: 1595 [2021-06-12 18:53:07,628 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:07,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-06-12 18:53:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1473. [2021-06-12 18:53:07,641 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) [2021-06-12 18:53:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4332 transitions. [2021-06-12 18:53:07,643 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4332 transitions. Word has length 26 [2021-06-12 18:53:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:07,643 INFO L482 AbstractCegarLoop]: Abstraction has 1473 states and 4332 transitions. [2021-06-12 18:53:07,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4332 transitions. [2021-06-12 18:53:07,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:07,645 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:07,645 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:07,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-12 18:53:07,645 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:07,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:07,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1895222174, now seen corresponding path program 112 times [2021-06-12 18:53:07,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:07,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731323998] [2021-06-12 18:53:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:07,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:07,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731323998] [2021-06-12 18:53:07,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731323998] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:07,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:07,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:07,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774004198] [2021-06-12 18:53:07,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:07,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:07,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:07,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:07,700 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) [2021-06-12 18:53:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:07,832 INFO L93 Difference]: Finished difference Result 1775 states and 5127 transitions. [2021-06-12 18:53:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:07,832 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 [2021-06-12 18:53:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:07,834 INFO L225 Difference]: With dead ends: 1775 [2021-06-12 18:53:07,834 INFO L226 Difference]: Without dead ends: 1647 [2021-06-12 18:53:07,834 INFO L728 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 [2021-06-12 18:53:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-12 18:53:07,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1525. [2021-06-12 18:53:07,848 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) [2021-06-12 18:53:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4461 transitions. [2021-06-12 18:53:07,850 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4461 transitions. Word has length 26 [2021-06-12 18:53:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:07,850 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4461 transitions. [2021-06-12 18:53:07,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4461 transitions. [2021-06-12 18:53:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:07,852 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:07,852 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:07,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-12 18:53:07,852 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1475702152, now seen corresponding path program 113 times [2021-06-12 18:53:07,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:07,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396858149] [2021-06-12 18:53:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:07,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:07,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396858149] [2021-06-12 18:53:07,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396858149] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:07,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:07,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:07,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932471447] [2021-06-12 18:53:07,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:07,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:07,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:07,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:07,917 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) [2021-06-12 18:53:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:08,102 INFO L93 Difference]: Finished difference Result 1738 states and 5008 transitions. [2021-06-12 18:53:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:08,105 INFO L225 Difference]: With dead ends: 1738 [2021-06-12 18:53:08,105 INFO L226 Difference]: Without dead ends: 1633 [2021-06-12 18:53:08,105 INFO L728 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 [2021-06-12 18:53:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-06-12 18:53:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1501. [2021-06-12 18:53:08,127 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) [2021-06-12 18:53:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 4399 transitions. [2021-06-12 18:53:08,129 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 4399 transitions. Word has length 26 [2021-06-12 18:53:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:08,129 INFO L482 AbstractCegarLoop]: Abstraction has 1501 states and 4399 transitions. [2021-06-12 18:53:08,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:08,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 4399 transitions. [2021-06-12 18:53:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:08,131 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:08,131 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:08,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-12 18:53:08,131 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:08,131 INFO L82 PathProgramCache]: Analyzing trace with hash 282971354, now seen corresponding path program 114 times [2021-06-12 18:53:08,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:08,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075160021] [2021-06-12 18:53:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:08,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:08,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075160021] [2021-06-12 18:53:08,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075160021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:08,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:08,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:08,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500854266] [2021-06-12 18:53:08,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:08,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:08,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:08,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:08,217 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) [2021-06-12 18:53:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:08,375 INFO L93 Difference]: Finished difference Result 1652 states and 4785 transitions. [2021-06-12 18:53:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:08,375 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 [2021-06-12 18:53:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:08,377 INFO L225 Difference]: With dead ends: 1652 [2021-06-12 18:53:08,377 INFO L226 Difference]: Without dead ends: 1573 [2021-06-12 18:53:08,378 INFO L728 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 [2021-06-12 18:53:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-12 18:53:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1507. [2021-06-12 18:53:08,392 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) [2021-06-12 18:53:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4409 transitions. [2021-06-12 18:53:08,395 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4409 transitions. Word has length 26 [2021-06-12 18:53:08,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:08,395 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 4409 transitions. [2021-06-12 18:53:08,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4409 transitions. [2021-06-12 18:53:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:08,396 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:08,396 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:08,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-12 18:53:08,396 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:08,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1152415962, now seen corresponding path program 115 times [2021-06-12 18:53:08,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:08,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363473721] [2021-06-12 18:53:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:08,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:08,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363473721] [2021-06-12 18:53:08,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363473721] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:08,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:08,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:08,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506237643] [2021-06-12 18:53:08,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:08,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:08,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:08,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:08,466 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) [2021-06-12 18:53:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:08,631 INFO L93 Difference]: Finished difference Result 1745 states and 5047 transitions. [2021-06-12 18:53:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:08,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:08,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:08,634 INFO L225 Difference]: With dead ends: 1745 [2021-06-12 18:53:08,634 INFO L226 Difference]: Without dead ends: 1641 [2021-06-12 18:53:08,634 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-12 18:53:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1499. [2021-06-12 18:53:08,649 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) [2021-06-12 18:53:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4394 transitions. [2021-06-12 18:53:08,651 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4394 transitions. Word has length 26 [2021-06-12 18:53:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:08,651 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4394 transitions. [2021-06-12 18:53:08,651 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) [2021-06-12 18:53:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4394 transitions. [2021-06-12 18:53:08,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:08,653 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:08,653 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:08,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-12 18:53:08,653 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:08,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:08,653 INFO L82 PathProgramCache]: Analyzing trace with hash -316295268, now seen corresponding path program 116 times [2021-06-12 18:53:08,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:08,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930444683] [2021-06-12 18:53:08,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:08,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:08,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930444683] [2021-06-12 18:53:08,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930444683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:08,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:08,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:08,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973354559] [2021-06-12 18:53:08,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:08,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:08,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:08,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:08,721 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) [2021-06-12 18:53:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:08,887 INFO L93 Difference]: Finished difference Result 1652 states and 4784 transitions. [2021-06-12 18:53:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:08,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:08,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:08,890 INFO L225 Difference]: With dead ends: 1652 [2021-06-12 18:53:08,890 INFO L226 Difference]: Without dead ends: 1573 [2021-06-12 18:53:08,890 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-12 18:53:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1493. [2021-06-12 18:53:08,904 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) [2021-06-12 18:53:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4384 transitions. [2021-06-12 18:53:08,906 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4384 transitions. Word has length 26 [2021-06-12 18:53:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:08,906 INFO L482 AbstractCegarLoop]: Abstraction has 1493 states and 4384 transitions. [2021-06-12 18:53:08,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:08,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4384 transitions. [2021-06-12 18:53:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:08,907 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:08,907 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:08,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-12 18:53:08,908 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:08,908 INFO L82 PathProgramCache]: Analyzing trace with hash -889692544, now seen corresponding path program 117 times [2021-06-12 18:53:08,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:08,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804101790] [2021-06-12 18:53:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:08,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:08,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804101790] [2021-06-12 18:53:08,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804101790] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:08,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:08,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:08,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105244545] [2021-06-12 18:53:08,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:08,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:08,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:08,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:08,976 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) [2021-06-12 18:53:09,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:09,149 INFO L93 Difference]: Finished difference Result 1700 states and 4918 transitions. [2021-06-12 18:53:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:09,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:09,152 INFO L225 Difference]: With dead ends: 1700 [2021-06-12 18:53:09,152 INFO L226 Difference]: Without dead ends: 1604 [2021-06-12 18:53:09,152 INFO L728 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 [2021-06-12 18:53:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-06-12 18:53:09,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1481. [2021-06-12 18:53:09,165 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) [2021-06-12 18:53:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4361 transitions. [2021-06-12 18:53:09,167 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4361 transitions. Word has length 26 [2021-06-12 18:53:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:09,167 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4361 transitions. [2021-06-12 18:53:09,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:09,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4361 transitions. [2021-06-12 18:53:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:09,169 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:09,169 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:09,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-12 18:53:09,169 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:09,169 INFO L82 PathProgramCache]: Analyzing trace with hash -664852864, now seen corresponding path program 118 times [2021-06-12 18:53:09,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:09,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788941321] [2021-06-12 18:53:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:09,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:09,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788941321] [2021-06-12 18:53:09,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788941321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:09,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:09,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:09,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188307072] [2021-06-12 18:53:09,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:09,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:09,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:09,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:09,221 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) [2021-06-12 18:53:09,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:09,351 INFO L93 Difference]: Finished difference Result 1724 states and 4976 transitions. [2021-06-12 18:53:09,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:09,352 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 [2021-06-12 18:53:09,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:09,354 INFO L225 Difference]: With dead ends: 1724 [2021-06-12 18:53:09,354 INFO L226 Difference]: Without dead ends: 1560 [2021-06-12 18:53:09,354 INFO L728 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 [2021-06-12 18:53:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-06-12 18:53:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1470. [2021-06-12 18:53:09,367 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) [2021-06-12 18:53:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4309 transitions. [2021-06-12 18:53:09,369 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4309 transitions. Word has length 26 [2021-06-12 18:53:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:09,369 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4309 transitions. [2021-06-12 18:53:09,369 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) [2021-06-12 18:53:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4309 transitions. [2021-06-12 18:53:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:09,371 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:09,371 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:09,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-12 18:53:09,371 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:09,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:09,371 INFO L82 PathProgramCache]: Analyzing trace with hash 259190106, now seen corresponding path program 119 times [2021-06-12 18:53:09,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:09,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448433127] [2021-06-12 18:53:09,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:09,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:09,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448433127] [2021-06-12 18:53:09,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448433127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:09,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:09,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:09,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937161736] [2021-06-12 18:53:09,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:09,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:09,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:09,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:09,438 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) [2021-06-12 18:53:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:09,604 INFO L93 Difference]: Finished difference Result 1671 states and 4816 transitions. [2021-06-12 18:53:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:09,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:09,606 INFO L225 Difference]: With dead ends: 1671 [2021-06-12 18:53:09,606 INFO L226 Difference]: Without dead ends: 1566 [2021-06-12 18:53:09,606 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-06-12 18:53:09,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1446. [2021-06-12 18:53:09,620 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) [2021-06-12 18:53:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4243 transitions. [2021-06-12 18:53:09,622 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4243 transitions. Word has length 26 [2021-06-12 18:53:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:09,622 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4243 transitions. [2021-06-12 18:53:09,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4243 transitions. [2021-06-12 18:53:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:09,623 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:09,623 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:09,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-12 18:53:09,624 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash 376447608, now seen corresponding path program 120 times [2021-06-12 18:53:09,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:09,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316533786] [2021-06-12 18:53:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:09,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:09,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316533786] [2021-06-12 18:53:09,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316533786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:09,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:09,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:09,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179081329] [2021-06-12 18:53:09,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:09,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:09,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:09,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:09,696 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) [2021-06-12 18:53:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:09,885 INFO L93 Difference]: Finished difference Result 1597 states and 4640 transitions. [2021-06-12 18:53:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:09,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:09,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:09,889 INFO L225 Difference]: With dead ends: 1597 [2021-06-12 18:53:09,889 INFO L226 Difference]: Without dead ends: 1518 [2021-06-12 18:53:09,889 INFO L728 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 [2021-06-12 18:53:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-12 18:53:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1448. [2021-06-12 18:53:09,902 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) [2021-06-12 18:53:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 4250 transitions. [2021-06-12 18:53:09,904 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 4250 transitions. Word has length 26 [2021-06-12 18:53:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:09,904 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 4250 transitions. [2021-06-12 18:53:09,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 4250 transitions. [2021-06-12 18:53:09,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:09,906 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:09,906 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:09,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-12 18:53:09,906 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1599135360, now seen corresponding path program 121 times [2021-06-12 18:53:09,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:09,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99228591] [2021-06-12 18:53:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:09,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:09,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99228591] [2021-06-12 18:53:09,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99228591] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:09,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:09,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:09,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724827812] [2021-06-12 18:53:09,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:09,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:09,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:09,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:09,987 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) [2021-06-12 18:53:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:10,167 INFO L93 Difference]: Finished difference Result 1668 states and 4799 transitions. [2021-06-12 18:53:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:10,167 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 [2021-06-12 18:53:10,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:10,169 INFO L225 Difference]: With dead ends: 1668 [2021-06-12 18:53:10,169 INFO L226 Difference]: Without dead ends: 1579 [2021-06-12 18:53:10,169 INFO L728 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 [2021-06-12 18:53:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-12 18:53:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1445. [2021-06-12 18:53:10,183 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) [2021-06-12 18:53:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4236 transitions. [2021-06-12 18:53:10,185 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4236 transitions. Word has length 26 [2021-06-12 18:53:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:10,185 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4236 transitions. [2021-06-12 18:53:10,185 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) [2021-06-12 18:53:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4236 transitions. [2021-06-12 18:53:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:10,186 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:10,186 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:10,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-12 18:53:10,187 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:10,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1192480934, now seen corresponding path program 122 times [2021-06-12 18:53:10,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:10,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997014634] [2021-06-12 18:53:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:10,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:10,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997014634] [2021-06-12 18:53:10,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997014634] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:10,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:10,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:10,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891074894] [2021-06-12 18:53:10,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:10,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:10,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:10,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:10,249 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) [2021-06-12 18:53:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:10,410 INFO L93 Difference]: Finished difference Result 1656 states and 4808 transitions. [2021-06-12 18:53:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:10,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:10,412 INFO L225 Difference]: With dead ends: 1656 [2021-06-12 18:53:10,412 INFO L226 Difference]: Without dead ends: 1553 [2021-06-12 18:53:10,412 INFO L728 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 [2021-06-12 18:53:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-06-12 18:53:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1387. [2021-06-12 18:53:10,425 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) [2021-06-12 18:53:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 4096 transitions. [2021-06-12 18:53:10,427 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 4096 transitions. Word has length 26 [2021-06-12 18:53:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:10,427 INFO L482 AbstractCegarLoop]: Abstraction has 1387 states and 4096 transitions. [2021-06-12 18:53:10,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 4096 transitions. [2021-06-12 18:53:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:10,428 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:10,429 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:10,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-12 18:53:10,429 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:10,429 INFO L82 PathProgramCache]: Analyzing trace with hash -938795814, now seen corresponding path program 123 times [2021-06-12 18:53:10,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:10,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759488688] [2021-06-12 18:53:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:10,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:10,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759488688] [2021-06-12 18:53:10,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759488688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:10,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:10,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:10,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082097900] [2021-06-12 18:53:10,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:10,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:10,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:10,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:10,491 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) [2021-06-12 18:53:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:10,655 INFO L93 Difference]: Finished difference Result 1532 states and 4467 transitions. [2021-06-12 18:53:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:10,655 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:10,657 INFO L225 Difference]: With dead ends: 1532 [2021-06-12 18:53:10,657 INFO L226 Difference]: Without dead ends: 1453 [2021-06-12 18:53:10,658 INFO L728 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 [2021-06-12 18:53:10,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-12 18:53:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1388. [2021-06-12 18:53:10,670 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) [2021-06-12 18:53:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4100 transitions. [2021-06-12 18:53:10,672 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4100 transitions. Word has length 26 [2021-06-12 18:53:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:10,672 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4100 transitions. [2021-06-12 18:53:10,672 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) [2021-06-12 18:53:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4100 transitions. [2021-06-12 18:53:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:10,674 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:10,674 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:10,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-12 18:53:10,674 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:10,674 INFO L82 PathProgramCache]: Analyzing trace with hash -69351206, now seen corresponding path program 124 times [2021-06-12 18:53:10,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:10,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389713841] [2021-06-12 18:53:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:10,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:10,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389713841] [2021-06-12 18:53:10,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389713841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:10,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:10,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:10,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053155291] [2021-06-12 18:53:10,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:10,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:10,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:10,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:10,747 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) [2021-06-12 18:53:10,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:10,909 INFO L93 Difference]: Finished difference Result 1568 states and 4567 transitions. [2021-06-12 18:53:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:10,909 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 [2021-06-12 18:53:10,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:10,911 INFO L225 Difference]: With dead ends: 1568 [2021-06-12 18:53:10,911 INFO L226 Difference]: Without dead ends: 1464 [2021-06-12 18:53:10,911 INFO L728 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 [2021-06-12 18:53:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-12 18:53:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1391. [2021-06-12 18:53:10,924 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) [2021-06-12 18:53:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4109 transitions. [2021-06-12 18:53:10,935 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4109 transitions. Word has length 26 [2021-06-12 18:53:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:10,935 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4109 transitions. [2021-06-12 18:53:10,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4109 transitions. [2021-06-12 18:53:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:10,937 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:10,937 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:10,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-12 18:53:10,937 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:10,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1538062436, now seen corresponding path program 125 times [2021-06-12 18:53:10,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:10,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663428002] [2021-06-12 18:53:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:10,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:10,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663428002] [2021-06-12 18:53:10,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663428002] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:10,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:10,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:10,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147563960] [2021-06-12 18:53:10,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:10,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:11,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:11,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:11,000 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) [2021-06-12 18:53:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:11,170 INFO L93 Difference]: Finished difference Result 1536 states and 4479 transitions. [2021-06-12 18:53:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:11,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:11,172 INFO L225 Difference]: With dead ends: 1536 [2021-06-12 18:53:11,172 INFO L226 Difference]: Without dead ends: 1457 [2021-06-12 18:53:11,172 INFO L728 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 [2021-06-12 18:53:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-06-12 18:53:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1392. [2021-06-12 18:53:11,185 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) [2021-06-12 18:53:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4113 transitions. [2021-06-12 18:53:11,187 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4113 transitions. Word has length 26 [2021-06-12 18:53:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:11,187 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 4113 transitions. [2021-06-12 18:53:11,187 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) [2021-06-12 18:53:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4113 transitions. [2021-06-12 18:53:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:11,188 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:11,188 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:11,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-12 18:53:11,188 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:11,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2111459712, now seen corresponding path program 126 times [2021-06-12 18:53:11,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:11,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126915459] [2021-06-12 18:53:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:11,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:11,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126915459] [2021-06-12 18:53:11,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126915459] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:11,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:11,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:11,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990278541] [2021-06-12 18:53:11,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:11,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:11,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:11,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:11,247 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) [2021-06-12 18:53:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:11,415 INFO L93 Difference]: Finished difference Result 1543 states and 4492 transitions. [2021-06-12 18:53:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:11,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:11,417 INFO L225 Difference]: With dead ends: 1543 [2021-06-12 18:53:11,417 INFO L226 Difference]: Without dead ends: 1460 [2021-06-12 18:53:11,417 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-06-12 18:53:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1393. [2021-06-12 18:53:11,430 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) [2021-06-12 18:53:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 4115 transitions. [2021-06-12 18:53:11,432 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 4115 transitions. Word has length 26 [2021-06-12 18:53:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:11,432 INFO L482 AbstractCegarLoop]: Abstraction has 1393 states and 4115 transitions. [2021-06-12 18:53:11,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 4115 transitions. [2021-06-12 18:53:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:11,434 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:11,434 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:11,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-12 18:53:11,434 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:11,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1524908864, now seen corresponding path program 127 times [2021-06-12 18:53:11,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:11,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844992799] [2021-06-12 18:53:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:11,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:11,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844992799] [2021-06-12 18:53:11,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844992799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:11,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:11,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:11,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045961131] [2021-06-12 18:53:11,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:11,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:11,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:11,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:11,496 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) [2021-06-12 18:53:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:11,668 INFO L93 Difference]: Finished difference Result 1572 states and 4601 transitions. [2021-06-12 18:53:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:11,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:11,670 INFO L225 Difference]: With dead ends: 1572 [2021-06-12 18:53:11,670 INFO L226 Difference]: Without dead ends: 1475 [2021-06-12 18:53:11,671 INFO L728 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 [2021-06-12 18:53:11,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-06-12 18:53:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1390. [2021-06-12 18:53:11,684 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) [2021-06-12 18:53:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4104 transitions. [2021-06-12 18:53:11,687 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4104 transitions. Word has length 26 [2021-06-12 18:53:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:11,687 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 4104 transitions. [2021-06-12 18:53:11,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4104 transitions. [2021-06-12 18:53:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:11,688 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:11,688 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:11,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-12 18:53:11,688 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:11,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:11,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2057990590, now seen corresponding path program 128 times [2021-06-12 18:53:11,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:11,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486424631] [2021-06-12 18:53:11,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:11,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:11,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486424631] [2021-06-12 18:53:11,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486424631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:11,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:11,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:11,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082269345] [2021-06-12 18:53:11,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:11,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:11,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:11,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:11,757 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) [2021-06-12 18:53:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:11,921 INFO L93 Difference]: Finished difference Result 1586 states and 4616 transitions. [2021-06-12 18:53:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:11,922 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:11,923 INFO L225 Difference]: With dead ends: 1586 [2021-06-12 18:53:11,924 INFO L226 Difference]: Without dead ends: 1498 [2021-06-12 18:53:11,924 INFO L728 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 [2021-06-12 18:53:11,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-06-12 18:53:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1391. [2021-06-12 18:53:11,936 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) [2021-06-12 18:53:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4105 transitions. [2021-06-12 18:53:11,938 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4105 transitions. Word has length 26 [2021-06-12 18:53:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:11,938 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4105 transitions. [2021-06-12 18:53:11,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4105 transitions. [2021-06-12 18:53:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:11,940 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:11,940 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:11,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-12 18:53:11,940 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:11,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1145603780, now seen corresponding path program 129 times [2021-06-12 18:53:11,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:11,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777140773] [2021-06-12 18:53:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:12,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:12,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777140773] [2021-06-12 18:53:12,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777140773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:12,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:12,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:12,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508891843] [2021-06-12 18:53:12,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:12,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:12,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:12,002 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) [2021-06-12 18:53:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:12,166 INFO L93 Difference]: Finished difference Result 1597 states and 4669 transitions. [2021-06-12 18:53:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:12,167 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 [2021-06-12 18:53:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:12,169 INFO L225 Difference]: With dead ends: 1597 [2021-06-12 18:53:12,169 INFO L226 Difference]: Without dead ends: 1518 [2021-06-12 18:53:12,169 INFO L728 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 [2021-06-12 18:53:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-12 18:53:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1397. [2021-06-12 18:53:12,181 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) [2021-06-12 18:53:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 4125 transitions. [2021-06-12 18:53:12,183 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 4125 transitions. Word has length 26 [2021-06-12 18:53:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:12,183 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 4125 transitions. [2021-06-12 18:53:12,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 4125 transitions. [2021-06-12 18:53:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:12,185 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:12,185 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:12,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-12 18:53:12,185 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:12,185 INFO L82 PathProgramCache]: Analyzing trace with hash -276159172, now seen corresponding path program 130 times [2021-06-12 18:53:12,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:12,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278665475] [2021-06-12 18:53:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:12,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:12,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278665475] [2021-06-12 18:53:12,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278665475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:12,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:12,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:12,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245539769] [2021-06-12 18:53:12,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:12,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:12,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:12,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:12,254 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) [2021-06-12 18:53:12,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:12,415 INFO L93 Difference]: Finished difference Result 1624 states and 4728 transitions. [2021-06-12 18:53:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:12,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:12,417 INFO L225 Difference]: With dead ends: 1624 [2021-06-12 18:53:12,417 INFO L226 Difference]: Without dead ends: 1520 [2021-06-12 18:53:12,417 INFO L728 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 [2021-06-12 18:53:12,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-12 18:53:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1388. [2021-06-12 18:53:12,430 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) [2021-06-12 18:53:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4091 transitions. [2021-06-12 18:53:12,432 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4091 transitions. Word has length 26 [2021-06-12 18:53:12,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:12,432 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4091 transitions. [2021-06-12 18:53:12,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:12,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4091 transitions. [2021-06-12 18:53:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:12,433 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:12,433 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:12,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-12 18:53:12,433 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:12,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1644524698, now seen corresponding path program 131 times [2021-06-12 18:53:12,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:12,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033565469] [2021-06-12 18:53:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:12,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:12,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033565469] [2021-06-12 18:53:12,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033565469] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:12,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:12,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:12,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595114870] [2021-06-12 18:53:12,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:12,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:12,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:12,496 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) [2021-06-12 18:53:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:12,656 INFO L93 Difference]: Finished difference Result 1580 states and 4623 transitions. [2021-06-12 18:53:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:12,657 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 [2021-06-12 18:53:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:12,658 INFO L225 Difference]: With dead ends: 1580 [2021-06-12 18:53:12,659 INFO L226 Difference]: Without dead ends: 1492 [2021-06-12 18:53:12,659 INFO L728 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 [2021-06-12 18:53:12,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-12 18:53:12,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1389. [2021-06-12 18:53:12,671 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) [2021-06-12 18:53:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4096 transitions. [2021-06-12 18:53:12,673 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4096 transitions. Word has length 26 [2021-06-12 18:53:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:12,673 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4096 transitions. [2021-06-12 18:53:12,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4096 transitions. [2021-06-12 18:53:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:12,675 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:12,675 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:12,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-12 18:53:12,675 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:12,675 INFO L82 PathProgramCache]: Analyzing trace with hash -25644290, now seen corresponding path program 132 times [2021-06-12 18:53:12,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:12,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109248453] [2021-06-12 18:53:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:12,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:12,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109248453] [2021-06-12 18:53:12,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109248453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:12,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:12,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:12,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040015750] [2021-06-12 18:53:12,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:12,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:12,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:12,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:12,737 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) [2021-06-12 18:53:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:12,904 INFO L93 Difference]: Finished difference Result 1516 states and 4425 transitions. [2021-06-12 18:53:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:12,905 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 [2021-06-12 18:53:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:12,907 INFO L225 Difference]: With dead ends: 1516 [2021-06-12 18:53:12,907 INFO L226 Difference]: Without dead ends: 1437 [2021-06-12 18:53:12,907 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:12,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-06-12 18:53:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1388. [2021-06-12 18:53:12,919 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) [2021-06-12 18:53:12,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4092 transitions. [2021-06-12 18:53:12,921 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4092 transitions. Word has length 26 [2021-06-12 18:53:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:12,921 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4092 transitions. [2021-06-12 18:53:12,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4092 transitions. [2021-06-12 18:53:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:12,922 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:12,922 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:12,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-12 18:53:12,924 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -599041566, now seen corresponding path program 133 times [2021-06-12 18:53:12,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:12,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552330904] [2021-06-12 18:53:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:12,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:12,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552330904] [2021-06-12 18:53:12,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552330904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:12,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:12,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:12,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404618617] [2021-06-12 18:53:12,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:12,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:12,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:12,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:12,983 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) [2021-06-12 18:53:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:13,149 INFO L93 Difference]: Finished difference Result 1536 states and 4461 transitions. [2021-06-12 18:53:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:13,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:13,152 INFO L225 Difference]: With dead ends: 1536 [2021-06-12 18:53:13,152 INFO L226 Difference]: Without dead ends: 1453 [2021-06-12 18:53:13,152 INFO L728 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 [2021-06-12 18:53:13,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-12 18:53:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1386. [2021-06-12 18:53:13,164 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) [2021-06-12 18:53:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4085 transitions. [2021-06-12 18:53:13,166 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4085 transitions. Word has length 26 [2021-06-12 18:53:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:13,166 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 4085 transitions. [2021-06-12 18:53:13,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4085 transitions. [2021-06-12 18:53:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:13,168 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:13,168 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:13,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-12 18:53:13,168 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:13,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1417788836, now seen corresponding path program 134 times [2021-06-12 18:53:13,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:13,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804944142] [2021-06-12 18:53:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:13,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:13,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804944142] [2021-06-12 18:53:13,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804944142] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:13,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:13,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:13,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618472354] [2021-06-12 18:53:13,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:13,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:13,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:13,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:13,227 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) [2021-06-12 18:53:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:13,392 INFO L93 Difference]: Finished difference Result 1582 states and 4605 transitions. [2021-06-12 18:53:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:13,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:13,395 INFO L225 Difference]: With dead ends: 1582 [2021-06-12 18:53:13,395 INFO L226 Difference]: Without dead ends: 1497 [2021-06-12 18:53:13,395 INFO L728 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 [2021-06-12 18:53:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-06-12 18:53:13,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1383. [2021-06-12 18:53:13,407 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) [2021-06-12 18:53:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4072 transitions. [2021-06-12 18:53:13,409 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4072 transitions. Word has length 26 [2021-06-12 18:53:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:13,409 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4072 transitions. [2021-06-12 18:53:13,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:13,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4072 transitions. [2021-06-12 18:53:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:13,411 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:13,411 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:13,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-12 18:53:13,411 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:13,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:13,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1848108702, now seen corresponding path program 135 times [2021-06-12 18:53:13,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:13,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328517303] [2021-06-12 18:53:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:13,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:13,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328517303] [2021-06-12 18:53:13,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328517303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:13,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:13,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:13,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444904787] [2021-06-12 18:53:13,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:13,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:13,477 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) [2021-06-12 18:53:13,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:13,641 INFO L93 Difference]: Finished difference Result 1557 states and 4506 transitions. [2021-06-12 18:53:13,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:13,642 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 [2021-06-12 18:53:13,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:13,644 INFO L225 Difference]: With dead ends: 1557 [2021-06-12 18:53:13,644 INFO L226 Difference]: Without dead ends: 1464 [2021-06-12 18:53:13,644 INFO L728 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 [2021-06-12 18:53:13,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-12 18:53:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1372. [2021-06-12 18:53:13,657 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) [2021-06-12 18:53:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4050 transitions. [2021-06-12 18:53:13,659 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4050 transitions. Word has length 26 [2021-06-12 18:53:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:13,659 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4050 transitions. [2021-06-12 18:53:13,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4050 transitions. [2021-06-12 18:53:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:13,660 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:13,660 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:13,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-12 18:53:13,660 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:13,661 INFO L82 PathProgramCache]: Analyzing trace with hash -782554082, now seen corresponding path program 136 times [2021-06-12 18:53:13,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:13,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420069334] [2021-06-12 18:53:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:13,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:13,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420069334] [2021-06-12 18:53:13,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420069334] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:13,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:13,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:53:13,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953681390] [2021-06-12 18:53:13,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:53:13,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:13,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:53:13,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:53:13,715 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) [2021-06-12 18:53:13,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:13,816 INFO L93 Difference]: Finished difference Result 1654 states and 4846 transitions. [2021-06-12 18:53:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:53:13,816 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 [2021-06-12 18:53:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:13,818 INFO L225 Difference]: With dead ends: 1654 [2021-06-12 18:53:13,818 INFO L226 Difference]: Without dead ends: 1575 [2021-06-12 18:53:13,818 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:53:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-06-12 18:53:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1438. [2021-06-12 18:53:13,832 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) [2021-06-12 18:53:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4247 transitions. [2021-06-12 18:53:13,834 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4247 transitions. Word has length 26 [2021-06-12 18:53:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:13,834 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4247 transitions. [2021-06-12 18:53:13,834 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) [2021-06-12 18:53:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4247 transitions. [2021-06-12 18:53:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:13,836 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:13,836 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:13,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-12 18:53:13,836 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:13,836 INFO L82 PathProgramCache]: Analyzing trace with hash 440133670, now seen corresponding path program 137 times [2021-06-12 18:53:13,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:13,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567551036] [2021-06-12 18:53:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:13,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:13,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567551036] [2021-06-12 18:53:13,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567551036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:13,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:13,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:13,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503928292] [2021-06-12 18:53:13,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:13,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:13,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:13,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:13,884 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) [2021-06-12 18:53:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:14,010 INFO L93 Difference]: Finished difference Result 1749 states and 5118 transitions. [2021-06-12 18:53:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:14,011 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 [2021-06-12 18:53:14,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:14,013 INFO L225 Difference]: With dead ends: 1749 [2021-06-12 18:53:14,013 INFO L226 Difference]: Without dead ends: 1598 [2021-06-12 18:53:14,013 INFO L728 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 [2021-06-12 18:53:14,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-12 18:53:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1426. [2021-06-12 18:53:14,027 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) [2021-06-12 18:53:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4209 transitions. [2021-06-12 18:53:14,028 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4209 transitions. Word has length 26 [2021-06-12 18:53:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:14,029 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4209 transitions. [2021-06-12 18:53:14,029 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) [2021-06-12 18:53:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4209 transitions. [2021-06-12 18:53:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:14,030 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:14,030 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:14,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-12 18:53:14,030 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:14,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1794672444, now seen corresponding path program 138 times [2021-06-12 18:53:14,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:14,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559773852] [2021-06-12 18:53:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:14,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:14,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559773852] [2021-06-12 18:53:14,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559773852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:14,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:14,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:14,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538370484] [2021-06-12 18:53:14,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:14,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:14,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:14,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:14,077 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) [2021-06-12 18:53:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:14,206 INFO L93 Difference]: Finished difference Result 1711 states and 4999 transitions. [2021-06-12 18:53:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:14,206 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 [2021-06-12 18:53:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:14,208 INFO L225 Difference]: With dead ends: 1711 [2021-06-12 18:53:14,208 INFO L226 Difference]: Without dead ends: 1632 [2021-06-12 18:53:14,208 INFO L728 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 [2021-06-12 18:53:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-06-12 18:53:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1428. [2021-06-12 18:53:14,222 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) [2021-06-12 18:53:14,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4214 transitions. [2021-06-12 18:53:14,224 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4214 transitions. Word has length 26 [2021-06-12 18:53:14,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:14,224 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4214 transitions. [2021-06-12 18:53:14,224 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) [2021-06-12 18:53:14,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4214 transitions. [2021-06-12 18:53:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:14,225 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:14,225 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:14,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-12 18:53:14,225 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:14,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:14,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1277607100, now seen corresponding path program 139 times [2021-06-12 18:53:14,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:14,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786916548] [2021-06-12 18:53:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:14,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:14,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786916548] [2021-06-12 18:53:14,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786916548] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:14,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:14,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:14,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038189024] [2021-06-12 18:53:14,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:14,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:14,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:14,279 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) [2021-06-12 18:53:14,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:14,411 INFO L93 Difference]: Finished difference Result 1743 states and 5115 transitions. [2021-06-12 18:53:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:14,411 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 [2021-06-12 18:53:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:14,413 INFO L225 Difference]: With dead ends: 1743 [2021-06-12 18:53:14,413 INFO L226 Difference]: Without dead ends: 1660 [2021-06-12 18:53:14,413 INFO L728 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 [2021-06-12 18:53:14,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-12 18:53:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1428. [2021-06-12 18:53:14,427 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) [2021-06-12 18:53:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4212 transitions. [2021-06-12 18:53:14,429 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4212 transitions. Word has length 26 [2021-06-12 18:53:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:14,429 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4212 transitions. [2021-06-12 18:53:14,429 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) [2021-06-12 18:53:14,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4212 transitions. [2021-06-12 18:53:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:14,430 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:14,430 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:14,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-12 18:53:14,431 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:14,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:14,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1532456486, now seen corresponding path program 140 times [2021-06-12 18:53:14,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:14,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528456300] [2021-06-12 18:53:14,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:14,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:14,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528456300] [2021-06-12 18:53:14,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528456300] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:14,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:14,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:14,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878371970] [2021-06-12 18:53:14,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:14,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:14,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:14,480 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) [2021-06-12 18:53:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:14,618 INFO L93 Difference]: Finished difference Result 1741 states and 5077 transitions. [2021-06-12 18:53:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:14,618 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 [2021-06-12 18:53:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:14,620 INFO L225 Difference]: With dead ends: 1741 [2021-06-12 18:53:14,620 INFO L226 Difference]: Without dead ends: 1630 [2021-06-12 18:53:14,620 INFO L728 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 [2021-06-12 18:53:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-06-12 18:53:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1396. [2021-06-12 18:53:14,634 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) [2021-06-12 18:53:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 4116 transitions. [2021-06-12 18:53:14,636 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 4116 transitions. Word has length 26 [2021-06-12 18:53:14,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:14,636 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 4116 transitions. [2021-06-12 18:53:14,636 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) [2021-06-12 18:53:14,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 4116 transitions. [2021-06-12 18:53:14,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:14,637 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:14,637 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:14,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-12 18:53:14,637 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:14,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:14,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1774043234, now seen corresponding path program 141 times [2021-06-12 18:53:14,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:14,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245934809] [2021-06-12 18:53:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:14,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:14,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245934809] [2021-06-12 18:53:14,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245934809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:14,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:14,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:14,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325463063] [2021-06-12 18:53:14,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:14,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:14,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:14,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:14,691 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) [2021-06-12 18:53:14,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:14,823 INFO L93 Difference]: Finished difference Result 1586 states and 4638 transitions. [2021-06-12 18:53:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:14,823 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 [2021-06-12 18:53:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:14,825 INFO L225 Difference]: With dead ends: 1586 [2021-06-12 18:53:14,825 INFO L226 Difference]: Without dead ends: 1507 [2021-06-12 18:53:14,825 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-06-12 18:53:14,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1406. [2021-06-12 18:53:14,838 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) [2021-06-12 18:53:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4146 transitions. [2021-06-12 18:53:14,840 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4146 transitions. Word has length 26 [2021-06-12 18:53:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:14,840 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4146 transitions. [2021-06-12 18:53:14,840 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) [2021-06-12 18:53:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4146 transitions. [2021-06-12 18:53:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:14,841 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:14,841 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:14,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-12 18:53:14,842 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:14,842 INFO L82 PathProgramCache]: Analyzing trace with hash -904598626, now seen corresponding path program 142 times [2021-06-12 18:53:14,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:14,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078434658] [2021-06-12 18:53:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:14,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:14,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078434658] [2021-06-12 18:53:14,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078434658] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:14,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:14,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:14,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420418897] [2021-06-12 18:53:14,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:14,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:14,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:14,901 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) [2021-06-12 18:53:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:15,030 INFO L93 Difference]: Finished difference Result 1622 states and 4736 transitions. [2021-06-12 18:53:15,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:15,030 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 [2021-06-12 18:53:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:15,032 INFO L225 Difference]: With dead ends: 1622 [2021-06-12 18:53:15,032 INFO L226 Difference]: Without dead ends: 1518 [2021-06-12 18:53:15,032 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:15,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-12 18:53:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1422. [2021-06-12 18:53:15,045 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) [2021-06-12 18:53:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4195 transitions. [2021-06-12 18:53:15,047 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4195 transitions. Word has length 26 [2021-06-12 18:53:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:15,047 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4195 transitions. [2021-06-12 18:53:15,047 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) [2021-06-12 18:53:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4195 transitions. [2021-06-12 18:53:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:15,048 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:15,048 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:15,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-12 18:53:15,049 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1921657440, now seen corresponding path program 143 times [2021-06-12 18:53:15,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:15,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892740894] [2021-06-12 18:53:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:15,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:15,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892740894] [2021-06-12 18:53:15,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892740894] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:15,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:15,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:15,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729591347] [2021-06-12 18:53:15,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:15,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:15,110 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) [2021-06-12 18:53:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:15,277 INFO L93 Difference]: Finished difference Result 1651 states and 4814 transitions. [2021-06-12 18:53:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:15,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:15,279 INFO L225 Difference]: With dead ends: 1651 [2021-06-12 18:53:15,279 INFO L226 Difference]: Without dead ends: 1572 [2021-06-12 18:53:15,279 INFO L728 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 [2021-06-12 18:53:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-06-12 18:53:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1446. [2021-06-12 18:53:15,292 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) [2021-06-12 18:53:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4261 transitions. [2021-06-12 18:53:15,294 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4261 transitions. Word has length 26 [2021-06-12 18:53:15,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:15,294 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4261 transitions. [2021-06-12 18:53:15,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4261 transitions. [2021-06-12 18:53:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:15,296 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:15,296 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:15,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-12 18:53:15,296 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:15,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1348260164, now seen corresponding path program 144 times [2021-06-12 18:53:15,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:15,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978531484] [2021-06-12 18:53:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:15,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:15,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978531484] [2021-06-12 18:53:15,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978531484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:15,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:15,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:15,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905535589] [2021-06-12 18:53:15,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:15,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:15,359 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) [2021-06-12 18:53:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:15,534 INFO L93 Difference]: Finished difference Result 1620 states and 4730 transitions. [2021-06-12 18:53:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:15,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:15,536 INFO L225 Difference]: With dead ends: 1620 [2021-06-12 18:53:15,536 INFO L226 Difference]: Without dead ends: 1509 [2021-06-12 18:53:15,536 INFO L728 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 [2021-06-12 18:53:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-06-12 18:53:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1461. [2021-06-12 18:53:15,549 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) [2021-06-12 18:53:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4308 transitions. [2021-06-12 18:53:15,551 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4308 transitions. Word has length 26 [2021-06-12 18:53:15,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:15,551 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4308 transitions. [2021-06-12 18:53:15,551 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) [2021-06-12 18:53:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4308 transitions. [2021-06-12 18:53:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:15,553 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:15,553 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:15,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-12 18:53:15,553 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:15,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1934811012, now seen corresponding path program 145 times [2021-06-12 18:53:15,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:15,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635171799] [2021-06-12 18:53:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:15,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:15,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635171799] [2021-06-12 18:53:15,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635171799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:15,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:15,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:15,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548924314] [2021-06-12 18:53:15,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:15,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:15,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:15,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:15,615 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) [2021-06-12 18:53:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:15,776 INFO L93 Difference]: Finished difference Result 1737 states and 5065 transitions. [2021-06-12 18:53:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:15,778 INFO L225 Difference]: With dead ends: 1737 [2021-06-12 18:53:15,778 INFO L226 Difference]: Without dead ends: 1640 [2021-06-12 18:53:15,778 INFO L728 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 [2021-06-12 18:53:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-06-12 18:53:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1487. [2021-06-12 18:53:15,792 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) [2021-06-12 18:53:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 4396 transitions. [2021-06-12 18:53:15,794 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 4396 transitions. Word has length 26 [2021-06-12 18:53:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:15,794 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 4396 transitions. [2021-06-12 18:53:15,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 4396 transitions. [2021-06-12 18:53:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:15,796 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:15,796 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:15,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-12 18:53:15,796 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:15,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1222743170, now seen corresponding path program 146 times [2021-06-12 18:53:15,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:15,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285262556] [2021-06-12 18:53:15,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:15,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:15,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285262556] [2021-06-12 18:53:15,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285262556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:15,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:15,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:15,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641938893] [2021-06-12 18:53:15,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:15,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:15,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:15,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:15,858 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) [2021-06-12 18:53:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:16,027 INFO L93 Difference]: Finished difference Result 1672 states and 4884 transitions. [2021-06-12 18:53:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:16,027 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 [2021-06-12 18:53:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:16,029 INFO L225 Difference]: With dead ends: 1672 [2021-06-12 18:53:16,029 INFO L226 Difference]: Without dead ends: 1584 [2021-06-12 18:53:16,029 INFO L728 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 [2021-06-12 18:53:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-12 18:53:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1485. [2021-06-12 18:53:16,043 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) [2021-06-12 18:53:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4391 transitions. [2021-06-12 18:53:16,045 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4391 transitions. Word has length 26 [2021-06-12 18:53:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:16,045 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4391 transitions. [2021-06-12 18:53:16,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:16,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4391 transitions. [2021-06-12 18:53:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:16,046 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:16,046 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:16,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-12 18:53:16,046 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:16,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1906471334, now seen corresponding path program 147 times [2021-06-12 18:53:16,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:16,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701210425] [2021-06-12 18:53:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:16,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:16,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701210425] [2021-06-12 18:53:16,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701210425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:16,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:16,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:16,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208323197] [2021-06-12 18:53:16,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:16,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:16,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:16,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:16,125 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) [2021-06-12 18:53:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:16,299 INFO L93 Difference]: Finished difference Result 1717 states and 5001 transitions. [2021-06-12 18:53:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:16,299 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 [2021-06-12 18:53:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:16,301 INFO L225 Difference]: With dead ends: 1717 [2021-06-12 18:53:16,301 INFO L226 Difference]: Without dead ends: 1584 [2021-06-12 18:53:16,301 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-12 18:53:16,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1461. [2021-06-12 18:53:16,315 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) [2021-06-12 18:53:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4317 transitions. [2021-06-12 18:53:16,328 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4317 transitions. Word has length 26 [2021-06-12 18:53:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:16,328 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4317 transitions. [2021-06-12 18:53:16,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4317 transitions. [2021-06-12 18:53:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:16,330 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:16,330 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:16,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-12 18:53:16,330 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1377180688, now seen corresponding path program 148 times [2021-06-12 18:53:16,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:16,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789745697] [2021-06-12 18:53:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:16,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:16,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789745697] [2021-06-12 18:53:16,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789745697] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:16,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:16,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:16,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034198378] [2021-06-12 18:53:16,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:16,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:16,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:16,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:16,392 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) [2021-06-12 18:53:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:16,553 INFO L93 Difference]: Finished difference Result 1724 states and 4996 transitions. [2021-06-12 18:53:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:16,553 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:16,555 INFO L225 Difference]: With dead ends: 1724 [2021-06-12 18:53:16,555 INFO L226 Difference]: Without dead ends: 1544 [2021-06-12 18:53:16,555 INFO L728 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 [2021-06-12 18:53:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-12 18:53:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1422. [2021-06-12 18:53:16,568 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) [2021-06-12 18:53:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4176 transitions. [2021-06-12 18:53:16,570 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4176 transitions. Word has length 26 [2021-06-12 18:53:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:16,570 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4176 transitions. [2021-06-12 18:53:16,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4176 transitions. [2021-06-12 18:53:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:16,572 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:16,572 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:16,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-12 18:53:16,572 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1039485756, now seen corresponding path program 149 times [2021-06-12 18:53:16,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:16,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471440554] [2021-06-12 18:53:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:16,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:16,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471440554] [2021-06-12 18:53:16,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471440554] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:16,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:16,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:16,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958730517] [2021-06-12 18:53:16,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:16,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:16,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:16,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:16,632 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) [2021-06-12 18:53:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:16,796 INFO L93 Difference]: Finished difference Result 1593 states and 4622 transitions. [2021-06-12 18:53:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:16,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:16,799 INFO L225 Difference]: With dead ends: 1593 [2021-06-12 18:53:16,799 INFO L226 Difference]: Without dead ends: 1514 [2021-06-12 18:53:16,799 INFO L728 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 [2021-06-12 18:53:16,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-06-12 18:53:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1421. [2021-06-12 18:53:16,812 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) [2021-06-12 18:53:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4172 transitions. [2021-06-12 18:53:16,814 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4172 transitions. Word has length 26 [2021-06-12 18:53:16,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:16,814 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4172 transitions. [2021-06-12 18:53:16,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4172 transitions. [2021-06-12 18:53:16,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:16,815 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:16,815 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:16,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-12 18:53:16,816 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:16,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:16,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1908930364, now seen corresponding path program 150 times [2021-06-12 18:53:16,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:16,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671439490] [2021-06-12 18:53:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:16,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:16,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671439490] [2021-06-12 18:53:16,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671439490] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:16,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:16,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:16,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473201773] [2021-06-12 18:53:16,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:16,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:16,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:16,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:16,875 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) [2021-06-12 18:53:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:17,042 INFO L93 Difference]: Finished difference Result 1587 states and 4608 transitions. [2021-06-12 18:53:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:17,042 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 [2021-06-12 18:53:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:17,044 INFO L225 Difference]: With dead ends: 1587 [2021-06-12 18:53:17,044 INFO L226 Difference]: Without dead ends: 1483 [2021-06-12 18:53:17,044 INFO L728 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 [2021-06-12 18:53:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-06-12 18:53:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1422. [2021-06-12 18:53:17,057 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) [2021-06-12 18:53:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4173 transitions. [2021-06-12 18:53:17,059 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4173 transitions. Word has length 26 [2021-06-12 18:53:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:17,059 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4173 transitions. [2021-06-12 18:53:17,059 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) [2021-06-12 18:53:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4173 transitions. [2021-06-12 18:53:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:17,060 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:17,061 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:17,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-12 18:53:17,061 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:17,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:17,061 INFO L82 PathProgramCache]: Analyzing trace with hash 440219134, now seen corresponding path program 151 times [2021-06-12 18:53:17,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:17,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897938370] [2021-06-12 18:53:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:17,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:17,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897938370] [2021-06-12 18:53:17,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897938370] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:17,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:17,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:17,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67037492] [2021-06-12 18:53:17,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:17,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:17,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:17,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:17,123 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) [2021-06-12 18:53:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:17,295 INFO L93 Difference]: Finished difference Result 1574 states and 4561 transitions. [2021-06-12 18:53:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:17,296 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 [2021-06-12 18:53:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:17,297 INFO L225 Difference]: With dead ends: 1574 [2021-06-12 18:53:17,298 INFO L226 Difference]: Without dead ends: 1495 [2021-06-12 18:53:17,298 INFO L728 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 [2021-06-12 18:53:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-06-12 18:53:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1423. [2021-06-12 18:53:17,310 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) [2021-06-12 18:53:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 4177 transitions. [2021-06-12 18:53:17,312 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 4177 transitions. Word has length 26 [2021-06-12 18:53:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:17,312 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 4177 transitions. [2021-06-12 18:53:17,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 4177 transitions. [2021-06-12 18:53:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:17,314 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:17,314 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:17,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-12 18:53:17,314 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash -133178142, now seen corresponding path program 152 times [2021-06-12 18:53:17,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:17,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871880712] [2021-06-12 18:53:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:17,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:17,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871880712] [2021-06-12 18:53:17,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871880712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:17,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:17,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:17,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393436777] [2021-06-12 18:53:17,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:17,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:17,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:17,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:17,380 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) [2021-06-12 18:53:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:17,550 INFO L93 Difference]: Finished difference Result 1563 states and 4535 transitions. [2021-06-12 18:53:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:17,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:17,552 INFO L225 Difference]: With dead ends: 1563 [2021-06-12 18:53:17,552 INFO L226 Difference]: Without dead ends: 1480 [2021-06-12 18:53:17,553 INFO L728 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 [2021-06-12 18:53:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-12 18:53:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1424. [2021-06-12 18:53:17,565 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) [2021-06-12 18:53:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4179 transitions. [2021-06-12 18:53:17,567 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4179 transitions. Word has length 26 [2021-06-12 18:53:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:17,567 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 4179 transitions. [2021-06-12 18:53:17,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:17,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4179 transitions. [2021-06-12 18:53:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:17,569 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:17,569 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:17,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-12 18:53:17,569 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:17,569 INFO L82 PathProgramCache]: Analyzing trace with hash 453372706, now seen corresponding path program 153 times [2021-06-12 18:53:17,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:17,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322929863] [2021-06-12 18:53:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:17,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:17,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322929863] [2021-06-12 18:53:17,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322929863] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:17,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:17,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:17,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591145745] [2021-06-12 18:53:17,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:17,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:17,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:17,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:17,626 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) [2021-06-12 18:53:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:17,786 INFO L93 Difference]: Finished difference Result 1627 states and 4733 transitions. [2021-06-12 18:53:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:17,786 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 [2021-06-12 18:53:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:17,788 INFO L225 Difference]: With dead ends: 1627 [2021-06-12 18:53:17,788 INFO L226 Difference]: Without dead ends: 1530 [2021-06-12 18:53:17,789 INFO L728 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 [2021-06-12 18:53:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-12 18:53:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1431. [2021-06-12 18:53:17,802 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) [2021-06-12 18:53:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4203 transitions. [2021-06-12 18:53:17,804 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4203 transitions. Word has length 26 [2021-06-12 18:53:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:17,804 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4203 transitions. [2021-06-12 18:53:17,804 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) [2021-06-12 18:53:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4203 transitions. [2021-06-12 18:53:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:17,805 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:17,805 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:17,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-12 18:53:17,805 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:17,806 INFO L82 PathProgramCache]: Analyzing trace with hash -258695136, now seen corresponding path program 154 times [2021-06-12 18:53:17,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:17,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463665754] [2021-06-12 18:53:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:17,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:17,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463665754] [2021-06-12 18:53:17,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463665754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:17,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:17,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:17,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774993365] [2021-06-12 18:53:17,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:17,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:17,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:17,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:17,881 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) [2021-06-12 18:53:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:18,050 INFO L93 Difference]: Finished difference Result 1607 states and 4663 transitions. [2021-06-12 18:53:18,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:18,050 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 [2021-06-12 18:53:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:18,052 INFO L225 Difference]: With dead ends: 1607 [2021-06-12 18:53:18,052 INFO L226 Difference]: Without dead ends: 1519 [2021-06-12 18:53:18,052 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-06-12 18:53:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1430. [2021-06-12 18:53:18,065 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) [2021-06-12 18:53:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4203 transitions. [2021-06-12 18:53:18,067 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4203 transitions. Word has length 26 [2021-06-12 18:53:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:18,067 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4203 transitions. [2021-06-12 18:53:18,067 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) [2021-06-12 18:53:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4203 transitions. [2021-06-12 18:53:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:18,069 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:18,069 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:18,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-12 18:53:18,069 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:18,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1952637280, now seen corresponding path program 155 times [2021-06-12 18:53:18,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:18,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953167035] [2021-06-12 18:53:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:18,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:18,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953167035] [2021-06-12 18:53:18,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953167035] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:18,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:18,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:18,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584563372] [2021-06-12 18:53:18,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:18,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:18,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:18,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:18,131 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) [2021-06-12 18:53:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:18,304 INFO L93 Difference]: Finished difference Result 1567 states and 4558 transitions. [2021-06-12 18:53:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:18,304 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 [2021-06-12 18:53:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:18,306 INFO L225 Difference]: With dead ends: 1567 [2021-06-12 18:53:18,306 INFO L226 Difference]: Without dead ends: 1488 [2021-06-12 18:53:18,306 INFO L728 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 [2021-06-12 18:53:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-12 18:53:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1429. [2021-06-12 18:53:18,319 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) [2021-06-12 18:53:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4199 transitions. [2021-06-12 18:53:18,321 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4199 transitions. Word has length 26 [2021-06-12 18:53:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:18,321 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4199 transitions. [2021-06-12 18:53:18,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4199 transitions. [2021-06-12 18:53:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:18,322 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:18,322 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:18,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-12 18:53:18,323 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:18,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:18,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1379240004, now seen corresponding path program 156 times [2021-06-12 18:53:18,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:18,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444860204] [2021-06-12 18:53:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:18,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:18,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444860204] [2021-06-12 18:53:18,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444860204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:18,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:18,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:18,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215963768] [2021-06-12 18:53:18,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:18,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:18,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:18,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:18,406 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) [2021-06-12 18:53:18,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:18,584 INFO L93 Difference]: Finished difference Result 1572 states and 4563 transitions. [2021-06-12 18:53:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:18,584 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 [2021-06-12 18:53:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:18,586 INFO L225 Difference]: With dead ends: 1572 [2021-06-12 18:53:18,586 INFO L226 Difference]: Without dead ends: 1489 [2021-06-12 18:53:18,586 INFO L728 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 [2021-06-12 18:53:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-06-12 18:53:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1430. [2021-06-12 18:53:18,599 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) [2021-06-12 18:53:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4200 transitions. [2021-06-12 18:53:18,601 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4200 transitions. Word has length 26 [2021-06-12 18:53:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:18,601 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4200 transitions. [2021-06-12 18:53:18,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4200 transitions. [2021-06-12 18:53:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:18,602 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:18,603 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:18,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-12 18:53:18,603 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash 560492734, now seen corresponding path program 157 times [2021-06-12 18:53:18,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:18,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603691864] [2021-06-12 18:53:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:18,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:18,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603691864] [2021-06-12 18:53:18,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603691864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:18,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:18,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:18,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757957815] [2021-06-12 18:53:18,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:18,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:18,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:18,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:18,663 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) [2021-06-12 18:53:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:18,825 INFO L93 Difference]: Finished difference Result 1645 states and 4769 transitions. [2021-06-12 18:53:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:18,825 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 [2021-06-12 18:53:18,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:18,827 INFO L225 Difference]: With dead ends: 1645 [2021-06-12 18:53:18,827 INFO L226 Difference]: Without dead ends: 1554 [2021-06-12 18:53:18,827 INFO L728 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 [2021-06-12 18:53:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-06-12 18:53:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1426. [2021-06-12 18:53:18,841 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) [2021-06-12 18:53:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4186 transitions. [2021-06-12 18:53:18,843 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4186 transitions. Word has length 26 [2021-06-12 18:53:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:18,843 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4186 transitions. [2021-06-12 18:53:18,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4186 transitions. [2021-06-12 18:53:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:18,844 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:18,844 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:18,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-12 18:53:18,844 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash 130172868, now seen corresponding path program 158 times [2021-06-12 18:53:18,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:18,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127276030] [2021-06-12 18:53:18,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:18,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:18,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127276030] [2021-06-12 18:53:18,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127276030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:18,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:18,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:18,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117563093] [2021-06-12 18:53:18,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:18,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:18,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:18,907 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) [2021-06-12 18:53:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:19,078 INFO L93 Difference]: Finished difference Result 1595 states and 4605 transitions. [2021-06-12 18:53:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:19,080 INFO L225 Difference]: With dead ends: 1595 [2021-06-12 18:53:19,080 INFO L226 Difference]: Without dead ends: 1496 [2021-06-12 18:53:19,080 INFO L728 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 [2021-06-12 18:53:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-12 18:53:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1431. [2021-06-12 18:53:19,098 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) [2021-06-12 18:53:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4196 transitions. [2021-06-12 18:53:19,100 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4196 transitions. Word has length 26 [2021-06-12 18:53:19,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:19,100 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4196 transitions. [2021-06-12 18:53:19,100 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) [2021-06-12 18:53:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4196 transitions. [2021-06-12 18:53:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:19,102 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:19,102 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:19,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-12 18:53:19,102 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:19,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:19,102 INFO L82 PathProgramCache]: Analyzing trace with hash -609950332, now seen corresponding path program 159 times [2021-06-12 18:53:19,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:19,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917411727] [2021-06-12 18:53:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:19,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:19,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917411727] [2021-06-12 18:53:19,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917411727] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:19,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:19,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:19,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565285751] [2021-06-12 18:53:19,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:19,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:19,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:19,170 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) [2021-06-12 18:53:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:19,341 INFO L93 Difference]: Finished difference Result 1626 states and 4726 transitions. [2021-06-12 18:53:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:19,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:19,343 INFO L225 Difference]: With dead ends: 1626 [2021-06-12 18:53:19,343 INFO L226 Difference]: Without dead ends: 1529 [2021-06-12 18:53:19,343 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-06-12 18:53:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1429. [2021-06-12 18:53:19,357 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) [2021-06-12 18:53:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4188 transitions. [2021-06-12 18:53:19,359 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4188 transitions. Word has length 26 [2021-06-12 18:53:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:19,359 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4188 transitions. [2021-06-12 18:53:19,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4188 transitions. [2021-06-12 18:53:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:19,360 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:19,360 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:19,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-12 18:53:19,360 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:19,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:19,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1322018174, now seen corresponding path program 160 times [2021-06-12 18:53:19,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:19,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939715915] [2021-06-12 18:53:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:19,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:19,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939715915] [2021-06-12 18:53:19,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939715915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:19,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:19,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:19,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610067718] [2021-06-12 18:53:19,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:19,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:19,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:19,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:19,423 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) [2021-06-12 18:53:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:19,592 INFO L93 Difference]: Finished difference Result 1603 states and 4654 transitions. [2021-06-12 18:53:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:19,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:19,594 INFO L225 Difference]: With dead ends: 1603 [2021-06-12 18:53:19,594 INFO L226 Difference]: Without dead ends: 1517 [2021-06-12 18:53:19,595 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-06-12 18:53:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1437. [2021-06-12 18:53:19,608 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) [2021-06-12 18:53:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4211 transitions. [2021-06-12 18:53:19,610 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4211 transitions. Word has length 26 [2021-06-12 18:53:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:19,610 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4211 transitions. [2021-06-12 18:53:19,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4211 transitions. [2021-06-12 18:53:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:19,611 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:19,611 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:19,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-12 18:53:19,611 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:19,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1411777824, now seen corresponding path program 161 times [2021-06-12 18:53:19,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:19,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226286301] [2021-06-12 18:53:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:19,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:19,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226286301] [2021-06-12 18:53:19,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226286301] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:19,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:19,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:19,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994365553] [2021-06-12 18:53:19,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:19,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:19,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:19,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:19,681 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) [2021-06-12 18:53:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:19,846 INFO L93 Difference]: Finished difference Result 1577 states and 4563 transitions. [2021-06-12 18:53:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:19,847 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 [2021-06-12 18:53:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:19,849 INFO L225 Difference]: With dead ends: 1577 [2021-06-12 18:53:19,849 INFO L226 Difference]: Without dead ends: 1482 [2021-06-12 18:53:19,849 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-06-12 18:53:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1420. [2021-06-12 18:53:19,862 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) [2021-06-12 18:53:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 4166 transitions. [2021-06-12 18:53:19,863 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 4166 transitions. Word has length 26 [2021-06-12 18:53:19,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:19,864 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 4166 transitions. [2021-06-12 18:53:19,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 4166 transitions. [2021-06-12 18:53:19,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:19,865 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:19,865 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:19,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-12 18:53:19,865 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:19,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1692751788, now seen corresponding path program 162 times [2021-06-12 18:53:19,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:19,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393080199] [2021-06-12 18:53:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:19,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:19,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393080199] [2021-06-12 18:53:19,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393080199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:19,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:19,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:19,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481247858] [2021-06-12 18:53:19,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:19,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:19,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:19,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:19,914 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) [2021-06-12 18:53:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:20,048 INFO L93 Difference]: Finished difference Result 1724 states and 5023 transitions. [2021-06-12 18:53:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:20,048 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 [2021-06-12 18:53:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:20,050 INFO L225 Difference]: With dead ends: 1724 [2021-06-12 18:53:20,050 INFO L226 Difference]: Without dead ends: 1639 [2021-06-12 18:53:20,050 INFO L728 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 [2021-06-12 18:53:20,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-12 18:53:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1456. [2021-06-12 18:53:20,064 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) [2021-06-12 18:53:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4275 transitions. [2021-06-12 18:53:20,066 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4275 transitions. Word has length 26 [2021-06-12 18:53:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:20,066 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4275 transitions. [2021-06-12 18:53:20,066 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) [2021-06-12 18:53:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4275 transitions. [2021-06-12 18:53:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:20,067 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:20,067 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:20,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-12 18:53:20,067 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:20,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:20,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2028818232, now seen corresponding path program 163 times [2021-06-12 18:53:20,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:20,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472680203] [2021-06-12 18:53:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:20,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:20,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472680203] [2021-06-12 18:53:20,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472680203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:20,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:20,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:20,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480161042] [2021-06-12 18:53:20,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:20,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:20,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:20,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:20,126 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) [2021-06-12 18:53:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:20,288 INFO L93 Difference]: Finished difference Result 1767 states and 5149 transitions. [2021-06-12 18:53:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:20,288 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:20,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:20,290 INFO L225 Difference]: With dead ends: 1767 [2021-06-12 18:53:20,290 INFO L226 Difference]: Without dead ends: 1619 [2021-06-12 18:53:20,290 INFO L728 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 [2021-06-12 18:53:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-06-12 18:53:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1417. [2021-06-12 18:53:20,304 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) [2021-06-12 18:53:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4162 transitions. [2021-06-12 18:53:20,305 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4162 transitions. Word has length 26 [2021-06-12 18:53:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:20,306 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 4162 transitions. [2021-06-12 18:53:20,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4162 transitions. [2021-06-12 18:53:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:20,307 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:20,307 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:20,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-12 18:53:20,307 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:20,307 INFO L82 PathProgramCache]: Analyzing trace with hash 891859190, now seen corresponding path program 164 times [2021-06-12 18:53:20,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:20,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627365660] [2021-06-12 18:53:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:20,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:20,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627365660] [2021-06-12 18:53:20,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627365660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:20,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:20,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:20,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831617120] [2021-06-12 18:53:20,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:20,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:20,371 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) [2021-06-12 18:53:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:20,555 INFO L93 Difference]: Finished difference Result 1698 states and 4940 transitions. [2021-06-12 18:53:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:20,558 INFO L225 Difference]: With dead ends: 1698 [2021-06-12 18:53:20,558 INFO L226 Difference]: Without dead ends: 1613 [2021-06-12 18:53:20,558 INFO L728 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 [2021-06-12 18:53:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-06-12 18:53:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1419. [2021-06-12 18:53:20,572 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) [2021-06-12 18:53:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4167 transitions. [2021-06-12 18:53:20,573 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4167 transitions. Word has length 26 [2021-06-12 18:53:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:20,574 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4167 transitions. [2021-06-12 18:53:20,574 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) [2021-06-12 18:53:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4167 transitions. [2021-06-12 18:53:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:20,575 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:20,575 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:20,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-12 18:53:20,575 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:20,575 INFO L82 PathProgramCache]: Analyzing trace with hash 318461914, now seen corresponding path program 165 times [2021-06-12 18:53:20,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:20,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71887817] [2021-06-12 18:53:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:20,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:20,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71887817] [2021-06-12 18:53:20,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71887817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:20,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:20,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:20,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851829204] [2021-06-12 18:53:20,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:20,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:20,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:20,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:20,641 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) [2021-06-12 18:53:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:20,807 INFO L93 Difference]: Finished difference Result 1732 states and 5057 transitions. [2021-06-12 18:53:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:20,807 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:20,809 INFO L225 Difference]: With dead ends: 1732 [2021-06-12 18:53:20,809 INFO L226 Difference]: Without dead ends: 1649 [2021-06-12 18:53:20,809 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:20,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-06-12 18:53:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1438. [2021-06-12 18:53:20,823 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) [2021-06-12 18:53:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4228 transitions. [2021-06-12 18:53:20,825 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4228 transitions. Word has length 26 [2021-06-12 18:53:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:20,825 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4228 transitions. [2021-06-12 18:53:20,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4228 transitions. [2021-06-12 18:53:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:20,827 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:20,827 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:20,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-12 18:53:20,827 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:20,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:20,827 INFO L82 PathProgramCache]: Analyzing trace with hash -930605222, now seen corresponding path program 166 times [2021-06-12 18:53:20,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:20,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956900348] [2021-06-12 18:53:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:20,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:20,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956900348] [2021-06-12 18:53:20,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956900348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:20,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:20,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:20,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708651982] [2021-06-12 18:53:20,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:20,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:20,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:20,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:20,885 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) [2021-06-12 18:53:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:21,058 INFO L93 Difference]: Finished difference Result 1748 states and 5073 transitions. [2021-06-12 18:53:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:21,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:21,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:21,060 INFO L225 Difference]: With dead ends: 1748 [2021-06-12 18:53:21,060 INFO L226 Difference]: Without dead ends: 1639 [2021-06-12 18:53:21,060 INFO L728 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 [2021-06-12 18:53:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-12 18:53:21,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1406. [2021-06-12 18:53:21,074 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) [2021-06-12 18:53:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4130 transitions. [2021-06-12 18:53:21,076 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4130 transitions. Word has length 26 [2021-06-12 18:53:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:21,076 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4130 transitions. [2021-06-12 18:53:21,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4130 transitions. [2021-06-12 18:53:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:21,077 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:21,077 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:21,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-12 18:53:21,078 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:21,078 INFO L82 PathProgramCache]: Analyzing trace with hash -781109324, now seen corresponding path program 167 times [2021-06-12 18:53:21,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:21,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918232489] [2021-06-12 18:53:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:21,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:21,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918232489] [2021-06-12 18:53:21,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918232489] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:21,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:21,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 18:53:21,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428774196] [2021-06-12 18:53:21,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 18:53:21,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:21,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 18:53:21,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:53:21,119 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) [2021-06-12 18:53:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:21,219 INFO L93 Difference]: Finished difference Result 1712 states and 4985 transitions. [2021-06-12 18:53:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 18:53:21,219 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 [2021-06-12 18:53:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:21,221 INFO L225 Difference]: With dead ends: 1712 [2021-06-12 18:53:21,221 INFO L226 Difference]: Without dead ends: 1615 [2021-06-12 18:53:21,221 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 18:53:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-06-12 18:53:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1488. [2021-06-12 18:53:21,235 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) [2021-06-12 18:53:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4366 transitions. [2021-06-12 18:53:21,237 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4366 transitions. Word has length 26 [2021-06-12 18:53:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:21,237 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4366 transitions. [2021-06-12 18:53:21,237 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) [2021-06-12 18:53:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4366 transitions. [2021-06-12 18:53:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:21,239 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:21,239 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:21,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-12 18:53:21,239 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:21,239 INFO L82 PathProgramCache]: Analyzing trace with hash 88335284, now seen corresponding path program 168 times [2021-06-12 18:53:21,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:21,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302908973] [2021-06-12 18:53:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:21,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:21,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302908973] [2021-06-12 18:53:21,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302908973] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:21,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:21,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:21,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287763563] [2021-06-12 18:53:21,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:21,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:21,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:21,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:21,291 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) [2021-06-12 18:53:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:21,422 INFO L93 Difference]: Finished difference Result 1769 states and 5133 transitions. [2021-06-12 18:53:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:21,422 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 [2021-06-12 18:53:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:21,424 INFO L225 Difference]: With dead ends: 1769 [2021-06-12 18:53:21,424 INFO L226 Difference]: Without dead ends: 1570 [2021-06-12 18:53:21,424 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-06-12 18:53:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1462. [2021-06-12 18:53:21,438 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) [2021-06-12 18:53:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 4276 transitions. [2021-06-12 18:53:21,440 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 4276 transitions. Word has length 26 [2021-06-12 18:53:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:21,440 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 4276 transitions. [2021-06-12 18:53:21,440 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) [2021-06-12 18:53:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 4276 transitions. [2021-06-12 18:53:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:21,441 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:21,441 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:21,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-12 18:53:21,441 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:21,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1796117202, now seen corresponding path program 169 times [2021-06-12 18:53:21,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:21,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285723829] [2021-06-12 18:53:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:21,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:21,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285723829] [2021-06-12 18:53:21,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285723829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:21,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:21,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:21,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093659955] [2021-06-12 18:53:21,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:21,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:21,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:21,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:21,491 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) [2021-06-12 18:53:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:21,621 INFO L93 Difference]: Finished difference Result 1668 states and 4808 transitions. [2021-06-12 18:53:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:21,621 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 [2021-06-12 18:53:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:21,623 INFO L225 Difference]: With dead ends: 1668 [2021-06-12 18:53:21,623 INFO L226 Difference]: Without dead ends: 1571 [2021-06-12 18:53:21,623 INFO L728 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 [2021-06-12 18:53:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-06-12 18:53:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1452. [2021-06-12 18:53:21,637 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) [2021-06-12 18:53:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4251 transitions. [2021-06-12 18:53:21,639 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4251 transitions. Word has length 26 [2021-06-12 18:53:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:21,639 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4251 transitions. [2021-06-12 18:53:21,639 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) [2021-06-12 18:53:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4251 transitions. [2021-06-12 18:53:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:21,640 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:21,640 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:21,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-12 18:53:21,640 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:21,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1629405486, now seen corresponding path program 170 times [2021-06-12 18:53:21,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:21,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474548994] [2021-06-12 18:53:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:21,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:21,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474548994] [2021-06-12 18:53:21,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474548994] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:21,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:21,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:21,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787480233] [2021-06-12 18:53:21,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:21,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:21,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:21,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:21,702 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) [2021-06-12 18:53:21,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:21,864 INFO L93 Difference]: Finished difference Result 1677 states and 4834 transitions. [2021-06-12 18:53:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:21,865 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 [2021-06-12 18:53:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:21,867 INFO L225 Difference]: With dead ends: 1677 [2021-06-12 18:53:21,867 INFO L226 Difference]: Without dead ends: 1550 [2021-06-12 18:53:21,867 INFO L728 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 [2021-06-12 18:53:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-06-12 18:53:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1470. [2021-06-12 18:53:21,880 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) [2021-06-12 18:53:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4287 transitions. [2021-06-12 18:53:21,882 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4287 transitions. Word has length 26 [2021-06-12 18:53:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:21,882 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4287 transitions. [2021-06-12 18:53:21,882 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) [2021-06-12 18:53:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4287 transitions. [2021-06-12 18:53:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:21,884 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:21,884 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:21,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-12 18:53:21,884 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:21,884 INFO L82 PathProgramCache]: Analyzing trace with hash 623453304, now seen corresponding path program 171 times [2021-06-12 18:53:21,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:21,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21556546] [2021-06-12 18:53:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:21,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:21,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21556546] [2021-06-12 18:53:21,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21556546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:21,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:21,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:21,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549797877] [2021-06-12 18:53:21,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:21,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:21,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:21,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:21,937 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) [2021-06-12 18:53:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:22,069 INFO L93 Difference]: Finished difference Result 1737 states and 5007 transitions. [2021-06-12 18:53:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:22,069 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 [2021-06-12 18:53:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:22,071 INFO L225 Difference]: With dead ends: 1737 [2021-06-12 18:53:22,071 INFO L226 Difference]: Without dead ends: 1622 [2021-06-12 18:53:22,072 INFO L728 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 [2021-06-12 18:53:22,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-06-12 18:53:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1476. [2021-06-12 18:53:22,087 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) [2021-06-12 18:53:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4296 transitions. [2021-06-12 18:53:22,089 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4296 transitions. Word has length 26 [2021-06-12 18:53:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:22,089 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 4296 transitions. [2021-06-12 18:53:22,089 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) [2021-06-12 18:53:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4296 transitions. [2021-06-12 18:53:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:22,091 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:22,091 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:22,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-12 18:53:22,091 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1210004152, now seen corresponding path program 172 times [2021-06-12 18:53:22,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:22,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755318136] [2021-06-12 18:53:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:22,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:22,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755318136] [2021-06-12 18:53:22,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755318136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:22,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:22,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:22,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091216296] [2021-06-12 18:53:22,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:22,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:22,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:22,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:22,150 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) [2021-06-12 18:53:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:22,319 INFO L93 Difference]: Finished difference Result 1779 states and 5100 transitions. [2021-06-12 18:53:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:22,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:22,322 INFO L225 Difference]: With dead ends: 1779 [2021-06-12 18:53:22,322 INFO L226 Difference]: Without dead ends: 1623 [2021-06-12 18:53:22,322 INFO L728 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 [2021-06-12 18:53:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-06-12 18:53:22,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1498. [2021-06-12 18:53:22,336 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) [2021-06-12 18:53:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 4362 transitions. [2021-06-12 18:53:22,338 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 4362 transitions. Word has length 26 [2021-06-12 18:53:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:22,338 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 4362 transitions. [2021-06-12 18:53:22,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 4362 transitions. [2021-06-12 18:53:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:22,339 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:22,339 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:22,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-12 18:53:22,339 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:22,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:22,340 INFO L82 PathProgramCache]: Analyzing trace with hash 497936310, now seen corresponding path program 173 times [2021-06-12 18:53:22,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:22,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003709616] [2021-06-12 18:53:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:22,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:22,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003709616] [2021-06-12 18:53:22,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003709616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:22,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:22,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:22,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425261362] [2021-06-12 18:53:22,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:22,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:22,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:22,398 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) [2021-06-12 18:53:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:22,568 INFO L93 Difference]: Finished difference Result 1823 states and 5246 transitions. [2021-06-12 18:53:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:22,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:22,574 INFO L225 Difference]: With dead ends: 1823 [2021-06-12 18:53:22,574 INFO L226 Difference]: Without dead ends: 1667 [2021-06-12 18:53:22,574 INFO L728 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 [2021-06-12 18:53:22,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-06-12 18:53:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1522. [2021-06-12 18:53:22,589 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) [2021-06-12 18:53:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 4433 transitions. [2021-06-12 18:53:22,591 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 4433 transitions. Word has length 26 [2021-06-12 18:53:22,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:22,591 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 4433 transitions. [2021-06-12 18:53:22,591 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) [2021-06-12 18:53:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 4433 transitions. [2021-06-12 18:53:22,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:22,592 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:22,592 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:22,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-12 18:53:22,593 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:22,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:22,593 INFO L82 PathProgramCache]: Analyzing trace with hash -465295700, now seen corresponding path program 174 times [2021-06-12 18:53:22,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:22,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808012006] [2021-06-12 18:53:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:22,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:22,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808012006] [2021-06-12 18:53:22,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808012006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:22,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:22,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:22,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133774511] [2021-06-12 18:53:22,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:22,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:22,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:22,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:22,641 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) [2021-06-12 18:53:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:22,770 INFO L93 Difference]: Finished difference Result 1900 states and 5461 transitions. [2021-06-12 18:53:22,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:22,773 INFO L225 Difference]: With dead ends: 1900 [2021-06-12 18:53:22,773 INFO L226 Difference]: Without dead ends: 1636 [2021-06-12 18:53:22,773 INFO L728 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 [2021-06-12 18:53:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-12 18:53:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1508. [2021-06-12 18:53:22,786 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) [2021-06-12 18:53:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4358 transitions. [2021-06-12 18:53:22,788 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4358 transitions. Word has length 26 [2021-06-12 18:53:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:22,789 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4358 transitions. [2021-06-12 18:53:22,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4358 transitions. [2021-06-12 18:53:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:22,790 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:22,790 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:22,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-12 18:53:22,790 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2044727346, now seen corresponding path program 175 times [2021-06-12 18:53:22,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:22,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181724912] [2021-06-12 18:53:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:22,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:22,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181724912] [2021-06-12 18:53:22,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181724912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:22,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:22,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:22,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616385843] [2021-06-12 18:53:22,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:22,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:22,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:22,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:22,851 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) [2021-06-12 18:53:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:23,017 INFO L93 Difference]: Finished difference Result 1766 states and 4965 transitions. [2021-06-12 18:53:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:23,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:23,019 INFO L225 Difference]: With dead ends: 1766 [2021-06-12 18:53:23,019 INFO L226 Difference]: Without dead ends: 1508 [2021-06-12 18:53:23,019 INFO L728 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 [2021-06-12 18:53:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-06-12 18:53:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1438. [2021-06-12 18:53:23,032 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) [2021-06-12 18:53:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4077 transitions. [2021-06-12 18:53:23,034 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4077 transitions. Word has length 26 [2021-06-12 18:53:23,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:23,034 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4077 transitions. [2021-06-12 18:53:23,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4077 transitions. [2021-06-12 18:53:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:23,035 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:23,035 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:23,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-12 18:53:23,035 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:23,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1066489600, now seen corresponding path program 176 times [2021-06-12 18:53:23,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:23,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035620542] [2021-06-12 18:53:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:23,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:23,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035620542] [2021-06-12 18:53:23,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035620542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:23,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:23,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:23,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828437273] [2021-06-12 18:53:23,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:23,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:23,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:23,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:23,092 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) [2021-06-12 18:53:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:23,255 INFO L93 Difference]: Finished difference Result 1656 states and 4633 transitions. [2021-06-12 18:53:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:23,257 INFO L225 Difference]: With dead ends: 1656 [2021-06-12 18:53:23,257 INFO L226 Difference]: Without dead ends: 1505 [2021-06-12 18:53:23,257 INFO L728 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 [2021-06-12 18:53:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-06-12 18:53:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1438. [2021-06-12 18:53:23,270 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) [2021-06-12 18:53:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4065 transitions. [2021-06-12 18:53:23,272 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4065 transitions. Word has length 26 [2021-06-12 18:53:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:23,272 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4065 transitions. [2021-06-12 18:53:23,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4065 transitions. [2021-06-12 18:53:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:23,273 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:23,273 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:23,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-12 18:53:23,273 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:23,273 INFO L82 PathProgramCache]: Analyzing trace with hash -479938752, now seen corresponding path program 177 times [2021-06-12 18:53:23,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:23,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964416493] [2021-06-12 18:53:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:23,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:23,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964416493] [2021-06-12 18:53:23,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964416493] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:23,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:23,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:23,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760861768] [2021-06-12 18:53:23,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:23,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:23,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:23,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:23,330 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) [2021-06-12 18:53:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:23,489 INFO L93 Difference]: Finished difference Result 1661 states and 4643 transitions. [2021-06-12 18:53:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:23,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:23,491 INFO L225 Difference]: With dead ends: 1661 [2021-06-12 18:53:23,491 INFO L226 Difference]: Without dead ends: 1541 [2021-06-12 18:53:23,491 INFO L728 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 [2021-06-12 18:53:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-06-12 18:53:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1464. [2021-06-12 18:53:23,504 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) [2021-06-12 18:53:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4141 transitions. [2021-06-12 18:53:23,506 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4141 transitions. Word has length 26 [2021-06-12 18:53:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:23,506 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4141 transitions. [2021-06-12 18:53:23,506 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) [2021-06-12 18:53:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4141 transitions. [2021-06-12 18:53:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:23,507 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:23,508 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:23,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-12 18:53:23,508 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:23,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1192006594, now seen corresponding path program 178 times [2021-06-12 18:53:23,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:23,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604778057] [2021-06-12 18:53:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:23,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:23,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604778057] [2021-06-12 18:53:23,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604778057] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:23,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:23,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:23,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429929253] [2021-06-12 18:53:23,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:23,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:23,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:23,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:23,567 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) [2021-06-12 18:53:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:23,738 INFO L93 Difference]: Finished difference Result 1719 states and 4756 transitions. [2021-06-12 18:53:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:23,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:23,741 INFO L225 Difference]: With dead ends: 1719 [2021-06-12 18:53:23,741 INFO L226 Difference]: Without dead ends: 1599 [2021-06-12 18:53:23,741 INFO L728 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 [2021-06-12 18:53:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-06-12 18:53:23,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1456. [2021-06-12 18:53:23,755 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) [2021-06-12 18:53:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4120 transitions. [2021-06-12 18:53:23,757 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4120 transitions. Word has length 26 [2021-06-12 18:53:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:23,757 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4120 transitions. [2021-06-12 18:53:23,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4120 transitions. [2021-06-12 18:53:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:23,759 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:23,759 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:23,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-12 18:53:23,759 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1037569076, now seen corresponding path program 179 times [2021-06-12 18:53:23,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:23,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828363397] [2021-06-12 18:53:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:23,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:23,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828363397] [2021-06-12 18:53:23,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828363397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:23,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:23,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:23,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418722443] [2021-06-12 18:53:23,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:23,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:23,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:23,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:23,816 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) [2021-06-12 18:53:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:23,973 INFO L93 Difference]: Finished difference Result 1748 states and 4846 transitions. [2021-06-12 18:53:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:23,974 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 [2021-06-12 18:53:23,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:23,976 INFO L225 Difference]: With dead ends: 1748 [2021-06-12 18:53:23,976 INFO L226 Difference]: Without dead ends: 1524 [2021-06-12 18:53:23,976 INFO L728 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 [2021-06-12 18:53:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-06-12 18:53:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1396. [2021-06-12 18:53:23,989 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) [2021-06-12 18:53:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3950 transitions. [2021-06-12 18:53:23,991 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3950 transitions. Word has length 26 [2021-06-12 18:53:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:23,991 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3950 transitions. [2021-06-12 18:53:23,991 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) [2021-06-12 18:53:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3950 transitions. [2021-06-12 18:53:23,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:23,992 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:23,992 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:23,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-12 18:53:23,992 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:23,993 INFO L82 PathProgramCache]: Analyzing trace with hash 538943446, now seen corresponding path program 180 times [2021-06-12 18:53:23,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:23,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702312306] [2021-06-12 18:53:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:24,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:24,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702312306] [2021-06-12 18:53:24,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702312306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:24,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:24,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:24,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387496094] [2021-06-12 18:53:24,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:24,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:24,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:24,049 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) [2021-06-12 18:53:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:24,178 INFO L93 Difference]: Finished difference Result 1674 states and 4682 transitions. [2021-06-12 18:53:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:24,179 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 [2021-06-12 18:53:24,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:24,181 INFO L225 Difference]: With dead ends: 1674 [2021-06-12 18:53:24,181 INFO L226 Difference]: Without dead ends: 1589 [2021-06-12 18:53:24,181 INFO L728 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 [2021-06-12 18:53:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-06-12 18:53:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1426. [2021-06-12 18:53:24,194 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) [2021-06-12 18:53:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4032 transitions. [2021-06-12 18:53:24,196 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4032 transitions. Word has length 26 [2021-06-12 18:53:24,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:24,196 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4032 transitions. [2021-06-12 18:53:24,196 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) [2021-06-12 18:53:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4032 transitions. [2021-06-12 18:53:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:24,197 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:24,197 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:24,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-12 18:53:24,198 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:24,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:24,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1408388054, now seen corresponding path program 181 times [2021-06-12 18:53:24,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:24,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534453969] [2021-06-12 18:53:24,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:24,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:24,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534453969] [2021-06-12 18:53:24,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534453969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:24,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:24,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:24,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109301240] [2021-06-12 18:53:24,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:24,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:24,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:24,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:24,257 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) [2021-06-12 18:53:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:24,420 INFO L93 Difference]: Finished difference Result 1703 states and 4751 transitions. [2021-06-12 18:53:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:24,420 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 [2021-06-12 18:53:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:24,422 INFO L225 Difference]: With dead ends: 1703 [2021-06-12 18:53:24,422 INFO L226 Difference]: Without dead ends: 1516 [2021-06-12 18:53:24,422 INFO L728 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 [2021-06-12 18:53:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-06-12 18:53:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1388. [2021-06-12 18:53:24,435 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) [2021-06-12 18:53:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3911 transitions. [2021-06-12 18:53:24,436 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3911 transitions. Word has length 26 [2021-06-12 18:53:24,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:24,437 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 3911 transitions. [2021-06-12 18:53:24,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:24,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3911 transitions. [2021-06-12 18:53:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:24,438 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:24,438 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:24,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-12 18:53:24,438 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:24,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1178797324, now seen corresponding path program 182 times [2021-06-12 18:53:24,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:24,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660725786] [2021-06-12 18:53:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:24,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:24,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660725786] [2021-06-12 18:53:24,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660725786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:24,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:24,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:24,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057818435] [2021-06-12 18:53:24,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:24,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:24,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:24,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:24,509 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) [2021-06-12 18:53:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:24,673 INFO L93 Difference]: Finished difference Result 1583 states and 4394 transitions. [2021-06-12 18:53:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:24,674 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 [2021-06-12 18:53:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:24,676 INFO L225 Difference]: With dead ends: 1583 [2021-06-12 18:53:24,676 INFO L226 Difference]: Without dead ends: 1498 [2021-06-12 18:53:24,676 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:24,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-06-12 18:53:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1378. [2021-06-12 18:53:24,688 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) [2021-06-12 18:53:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 3890 transitions. [2021-06-12 18:53:24,690 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 3890 transitions. Word has length 26 [2021-06-12 18:53:24,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:24,690 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 3890 transitions. [2021-06-12 18:53:24,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 3890 transitions. [2021-06-12 18:53:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:24,691 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:24,691 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:24,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-12 18:53:24,692 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:24,692 INFO L82 PathProgramCache]: Analyzing trace with hash -309352716, now seen corresponding path program 183 times [2021-06-12 18:53:24,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:24,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290309483] [2021-06-12 18:53:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:24,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:24,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290309483] [2021-06-12 18:53:24,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290309483] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:24,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:24,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:24,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167706511] [2021-06-12 18:53:24,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:24,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:24,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:24,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:24,751 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) [2021-06-12 18:53:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:24,917 INFO L93 Difference]: Finished difference Result 1537 states and 4286 transitions. [2021-06-12 18:53:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:24,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:24,919 INFO L225 Difference]: With dead ends: 1537 [2021-06-12 18:53:24,919 INFO L226 Difference]: Without dead ends: 1442 [2021-06-12 18:53:24,919 INFO L728 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 [2021-06-12 18:53:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-06-12 18:53:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1390. [2021-06-12 18:53:24,931 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) [2021-06-12 18:53:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 3916 transitions. [2021-06-12 18:53:24,933 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 3916 transitions. Word has length 26 [2021-06-12 18:53:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:24,933 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 3916 transitions. [2021-06-12 18:53:24,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:24,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 3916 transitions. [2021-06-12 18:53:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:24,934 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:24,934 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:24,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-12 18:53:24,934 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:24,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1943506074, now seen corresponding path program 184 times [2021-06-12 18:53:24,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:24,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129360501] [2021-06-12 18:53:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:24,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:24,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129360501] [2021-06-12 18:53:24,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129360501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:24,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:24,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:24,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875132995] [2021-06-12 18:53:24,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:24,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:24,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:24,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:24,987 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) [2021-06-12 18:53:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:25,122 INFO L93 Difference]: Finished difference Result 1645 states and 4600 transitions. [2021-06-12 18:53:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:25,122 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 [2021-06-12 18:53:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:25,124 INFO L225 Difference]: With dead ends: 1645 [2021-06-12 18:53:25,124 INFO L226 Difference]: Without dead ends: 1562 [2021-06-12 18:53:25,124 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-06-12 18:53:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1396. [2021-06-12 18:53:25,137 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) [2021-06-12 18:53:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3925 transitions. [2021-06-12 18:53:25,139 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3925 transitions. Word has length 26 [2021-06-12 18:53:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:25,139 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3925 transitions. [2021-06-12 18:53:25,139 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) [2021-06-12 18:53:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3925 transitions. [2021-06-12 18:53:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:25,140 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:25,140 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:25,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-12 18:53:25,140 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:25,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1764910374, now seen corresponding path program 185 times [2021-06-12 18:53:25,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:25,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595164043] [2021-06-12 18:53:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:25,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:25,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595164043] [2021-06-12 18:53:25,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595164043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:25,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:25,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:25,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426907875] [2021-06-12 18:53:25,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:25,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:25,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:25,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:25,205 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) [2021-06-12 18:53:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:25,372 INFO L93 Difference]: Finished difference Result 1543 states and 4300 transitions. [2021-06-12 18:53:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:25,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:25,374 INFO L225 Difference]: With dead ends: 1543 [2021-06-12 18:53:25,374 INFO L226 Difference]: Without dead ends: 1455 [2021-06-12 18:53:25,374 INFO L728 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 [2021-06-12 18:53:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-12 18:53:25,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1392. [2021-06-12 18:53:25,386 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) [2021-06-12 18:53:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 3919 transitions. [2021-06-12 18:53:25,396 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 3919 transitions. Word has length 26 [2021-06-12 18:53:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:25,396 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 3919 transitions. [2021-06-12 18:53:25,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 3919 transitions. [2021-06-12 18:53:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:25,397 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:25,397 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:25,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-12 18:53:25,397 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:25,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1817989080, now seen corresponding path program 186 times [2021-06-12 18:53:25,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:25,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007662834] [2021-06-12 18:53:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:25,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:25,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007662834] [2021-06-12 18:53:25,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007662834] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:25,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:25,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:25,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546709055] [2021-06-12 18:53:25,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:25,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:25,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:25,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:25,455 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) [2021-06-12 18:53:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:25,623 INFO L93 Difference]: Finished difference Result 1684 states and 4690 transitions. [2021-06-12 18:53:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:25,623 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 [2021-06-12 18:53:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:25,625 INFO L225 Difference]: With dead ends: 1684 [2021-06-12 18:53:25,625 INFO L226 Difference]: Without dead ends: 1596 [2021-06-12 18:53:25,625 INFO L728 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 [2021-06-12 18:53:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-06-12 18:53:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1416. [2021-06-12 18:53:25,638 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) [2021-06-12 18:53:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3990 transitions. [2021-06-12 18:53:25,640 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3990 transitions. Word has length 26 [2021-06-12 18:53:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:25,640 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 3990 transitions. [2021-06-12 18:53:25,640 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) [2021-06-12 18:53:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3990 transitions. [2021-06-12 18:53:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:25,641 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:25,641 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:25,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-12 18:53:25,642 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:25,642 INFO L82 PathProgramCache]: Analyzing trace with hash 854757070, now seen corresponding path program 187 times [2021-06-12 18:53:25,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:25,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878164193] [2021-06-12 18:53:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:25,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:25,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878164193] [2021-06-12 18:53:25,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878164193] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:25,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:25,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:25,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384275787] [2021-06-12 18:53:25,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:25,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:25,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:25,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:25,689 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) [2021-06-12 18:53:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:25,819 INFO L93 Difference]: Finished difference Result 1704 states and 4749 transitions. [2021-06-12 18:53:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:25,819 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 [2021-06-12 18:53:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:25,821 INFO L225 Difference]: With dead ends: 1704 [2021-06-12 18:53:25,821 INFO L226 Difference]: Without dead ends: 1544 [2021-06-12 18:53:25,821 INFO L728 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 [2021-06-12 18:53:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-12 18:53:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1404. [2021-06-12 18:53:25,834 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) [2021-06-12 18:53:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 3956 transitions. [2021-06-12 18:53:25,836 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 3956 transitions. Word has length 26 [2021-06-12 18:53:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:25,836 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 3956 transitions. [2021-06-12 18:53:25,836 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) [2021-06-12 18:53:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 3956 transitions. [2021-06-12 18:53:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:25,837 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:25,837 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:25,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-12 18:53:25,837 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:25,838 INFO L82 PathProgramCache]: Analyzing trace with hash -724674576, now seen corresponding path program 188 times [2021-06-12 18:53:25,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:25,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512066301] [2021-06-12 18:53:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:25,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:25,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512066301] [2021-06-12 18:53:25,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512066301] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:25,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:25,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:25,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249935590] [2021-06-12 18:53:25,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:25,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:25,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:25,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:25,906 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) [2021-06-12 18:53:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:26,062 INFO L93 Difference]: Finished difference Result 1611 states and 4453 transitions. [2021-06-12 18:53:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:26,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:26,064 INFO L225 Difference]: With dead ends: 1611 [2021-06-12 18:53:26,064 INFO L226 Difference]: Without dead ends: 1492 [2021-06-12 18:53:26,064 INFO L728 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 [2021-06-12 18:53:26,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-12 18:53:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1394. [2021-06-12 18:53:26,078 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) [2021-06-12 18:53:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3934 transitions. [2021-06-12 18:53:26,080 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3934 transitions. Word has length 26 [2021-06-12 18:53:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:26,080 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 3934 transitions. [2021-06-12 18:53:26,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3934 transitions. [2021-06-12 18:53:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:26,082 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:26,082 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:26,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-12 18:53:26,082 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:26,082 INFO L82 PathProgramCache]: Analyzing trace with hash -903833710, now seen corresponding path program 189 times [2021-06-12 18:53:26,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:26,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845143106] [2021-06-12 18:53:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:26,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:26,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845143106] [2021-06-12 18:53:26,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845143106] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:26,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:26,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:26,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559220934] [2021-06-12 18:53:26,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:26,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:26,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:26,142 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) [2021-06-12 18:53:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:26,309 INFO L93 Difference]: Finished difference Result 1557 states and 4341 transitions. [2021-06-12 18:53:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:26,310 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 [2021-06-12 18:53:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:26,311 INFO L225 Difference]: With dead ends: 1557 [2021-06-12 18:53:26,311 INFO L226 Difference]: Without dead ends: 1472 [2021-06-12 18:53:26,311 INFO L728 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 [2021-06-12 18:53:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-06-12 18:53:26,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1396. [2021-06-12 18:53:26,324 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) [2021-06-12 18:53:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3942 transitions. [2021-06-12 18:53:26,325 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3942 transitions. Word has length 26 [2021-06-12 18:53:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:26,326 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3942 transitions. [2021-06-12 18:53:26,326 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) [2021-06-12 18:53:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3942 transitions. [2021-06-12 18:53:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:26,327 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:26,327 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:26,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-12 18:53:26,327 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:26,327 INFO L82 PathProgramCache]: Analyzing trace with hash -34389102, now seen corresponding path program 190 times [2021-06-12 18:53:26,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:26,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496604545] [2021-06-12 18:53:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:26,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:26,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496604545] [2021-06-12 18:53:26,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496604545] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:26,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:26,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:26,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960304265] [2021-06-12 18:53:26,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:26,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:26,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:26,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:26,396 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) [2021-06-12 18:53:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:26,567 INFO L93 Difference]: Finished difference Result 1544 states and 4317 transitions. [2021-06-12 18:53:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:26,567 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 [2021-06-12 18:53:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:26,569 INFO L225 Difference]: With dead ends: 1544 [2021-06-12 18:53:26,569 INFO L226 Difference]: Without dead ends: 1449 [2021-06-12 18:53:26,569 INFO L728 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 [2021-06-12 18:53:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-06-12 18:53:26,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1400. [2021-06-12 18:53:26,582 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) [2021-06-12 18:53:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-12 18:53:26,584 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-12 18:53:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:26,584 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-12 18:53:26,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-12 18:53:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:26,585 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:26,585 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:26,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-12 18:53:26,585 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:26,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:26,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1503100332, now seen corresponding path program 191 times [2021-06-12 18:53:26,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:26,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63605897] [2021-06-12 18:53:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:26,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:26,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63605897] [2021-06-12 18:53:26,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63605897] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:26,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:26,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:26,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556404517] [2021-06-12 18:53:26,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:26,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:26,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:26,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:26,650 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) [2021-06-12 18:53:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:26,816 INFO L93 Difference]: Finished difference Result 1551 states and 4333 transitions. [2021-06-12 18:53:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:26,818 INFO L225 Difference]: With dead ends: 1551 [2021-06-12 18:53:26,818 INFO L226 Difference]: Without dead ends: 1466 [2021-06-12 18:53:26,818 INFO L728 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 [2021-06-12 18:53:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-06-12 18:53:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1398. [2021-06-12 18:53:26,830 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) [2021-06-12 18:53:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3948 transitions. [2021-06-12 18:53:26,832 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3948 transitions. Word has length 26 [2021-06-12 18:53:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:26,832 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3948 transitions. [2021-06-12 18:53:26,833 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) [2021-06-12 18:53:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3948 transitions. [2021-06-12 18:53:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:26,834 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:26,834 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:26,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-12 18:53:26,834 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:26,834 INFO L82 PathProgramCache]: Analyzing trace with hash -2076497608, now seen corresponding path program 192 times [2021-06-12 18:53:26,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:26,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920641743] [2021-06-12 18:53:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:26,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:26,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920641743] [2021-06-12 18:53:26,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920641743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:26,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:26,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:26,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464159049] [2021-06-12 18:53:26,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:26,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:26,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:26,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:26,893 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) [2021-06-12 18:53:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:27,064 INFO L93 Difference]: Finished difference Result 1561 states and 4348 transitions. [2021-06-12 18:53:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:27,066 INFO L225 Difference]: With dead ends: 1561 [2021-06-12 18:53:27,066 INFO L226 Difference]: Without dead ends: 1478 [2021-06-12 18:53:27,066 INFO L728 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 [2021-06-12 18:53:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-06-12 18:53:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1398. [2021-06-12 18:53:27,079 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) [2021-06-12 18:53:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3946 transitions. [2021-06-12 18:53:27,080 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3946 transitions. Word has length 26 [2021-06-12 18:53:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:27,081 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3946 transitions. [2021-06-12 18:53:27,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3946 transitions. [2021-06-12 18:53:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:27,082 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:27,082 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:27,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-12 18:53:27,082 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:27,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:27,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1489946760, now seen corresponding path program 193 times [2021-06-12 18:53:27,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:27,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419723030] [2021-06-12 18:53:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:27,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:27,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419723030] [2021-06-12 18:53:27,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419723030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:27,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:27,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:27,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200650265] [2021-06-12 18:53:27,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:27,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:27,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:27,141 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) [2021-06-12 18:53:27,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:27,317 INFO L93 Difference]: Finished difference Result 1541 states and 4312 transitions. [2021-06-12 18:53:27,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:27,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:27,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:27,319 INFO L225 Difference]: With dead ends: 1541 [2021-06-12 18:53:27,319 INFO L226 Difference]: Without dead ends: 1453 [2021-06-12 18:53:27,320 INFO L728 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 [2021-06-12 18:53:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-12 18:53:27,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1399. [2021-06-12 18:53:27,332 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) [2021-06-12 18:53:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 3950 transitions. [2021-06-12 18:53:27,333 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 3950 transitions. Word has length 26 [2021-06-12 18:53:27,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:27,334 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 3950 transitions. [2021-06-12 18:53:27,334 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) [2021-06-12 18:53:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 3950 transitions. [2021-06-12 18:53:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:27,335 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:27,335 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:27,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-12 18:53:27,335 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:27,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2092952694, now seen corresponding path program 194 times [2021-06-12 18:53:27,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:27,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214484796] [2021-06-12 18:53:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:27,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:27,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214484796] [2021-06-12 18:53:27,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214484796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:27,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:27,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:27,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463108960] [2021-06-12 18:53:27,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:27,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:27,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:27,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:27,393 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) [2021-06-12 18:53:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:27,565 INFO L93 Difference]: Finished difference Result 1549 states and 4315 transitions. [2021-06-12 18:53:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:27,565 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:27,567 INFO L225 Difference]: With dead ends: 1549 [2021-06-12 18:53:27,567 INFO L226 Difference]: Without dead ends: 1461 [2021-06-12 18:53:27,567 INFO L728 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 [2021-06-12 18:53:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-06-12 18:53:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1400. [2021-06-12 18:53:27,579 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) [2021-06-12 18:53:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-12 18:53:27,581 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-12 18:53:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:27,581 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-12 18:53:27,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:27,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-12 18:53:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:27,582 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:27,582 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:27,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-12 18:53:27,582 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:27,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:27,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1110641676, now seen corresponding path program 195 times [2021-06-12 18:53:27,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:27,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691123922] [2021-06-12 18:53:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:27,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:27,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691123922] [2021-06-12 18:53:27,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691123922] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:27,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:27,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:27,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497248413] [2021-06-12 18:53:27,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:27,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:27,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:27,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:27,644 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) [2021-06-12 18:53:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:27,810 INFO L93 Difference]: Finished difference Result 1607 states and 4488 transitions. [2021-06-12 18:53:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:27,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:27,813 INFO L225 Difference]: With dead ends: 1607 [2021-06-12 18:53:27,813 INFO L226 Difference]: Without dead ends: 1522 [2021-06-12 18:53:27,813 INFO L728 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 [2021-06-12 18:53:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-12 18:53:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1400. [2021-06-12 18:53:27,825 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) [2021-06-12 18:53:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-12 18:53:27,827 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-12 18:53:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:27,827 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-12 18:53:27,827 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) [2021-06-12 18:53:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-12 18:53:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:27,829 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:27,829 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:27,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-12 18:53:27,829 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:27,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:27,829 INFO L82 PathProgramCache]: Analyzing trace with hash -241197068, now seen corresponding path program 196 times [2021-06-12 18:53:27,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:27,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513264675] [2021-06-12 18:53:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:27,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:27,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513264675] [2021-06-12 18:53:27,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513264675] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:27,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:27,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:27,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250512337] [2021-06-12 18:53:27,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:27,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:27,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:27,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:27,887 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) [2021-06-12 18:53:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:28,053 INFO L93 Difference]: Finished difference Result 1617 states and 4532 transitions. [2021-06-12 18:53:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:28,053 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 [2021-06-12 18:53:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:28,055 INFO L225 Difference]: With dead ends: 1617 [2021-06-12 18:53:28,055 INFO L226 Difference]: Without dead ends: 1522 [2021-06-12 18:53:28,055 INFO L728 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 [2021-06-12 18:53:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-12 18:53:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1407. [2021-06-12 18:53:28,068 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) [2021-06-12 18:53:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-06-12 18:53:28,070 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-06-12 18:53:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:28,070 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-06-12 18:53:28,070 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) [2021-06-12 18:53:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-06-12 18:53:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:28,071 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:28,071 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:28,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-12 18:53:28,071 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:28,071 INFO L82 PathProgramCache]: Analyzing trace with hash -495542802, now seen corresponding path program 197 times [2021-06-12 18:53:28,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:28,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160066229] [2021-06-12 18:53:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:28,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:28,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160066229] [2021-06-12 18:53:28,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160066229] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:28,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:28,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:28,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001016979] [2021-06-12 18:53:28,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:28,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:28,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:28,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:28,139 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) [2021-06-12 18:53:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:28,302 INFO L93 Difference]: Finished difference Result 1602 states and 4492 transitions. [2021-06-12 18:53:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:28,304 INFO L225 Difference]: With dead ends: 1602 [2021-06-12 18:53:28,304 INFO L226 Difference]: Without dead ends: 1502 [2021-06-12 18:53:28,305 INFO L728 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 [2021-06-12 18:53:28,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-12 18:53:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1405. [2021-06-12 18:53:28,317 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) [2021-06-12 18:53:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 3969 transitions. [2021-06-12 18:53:28,319 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 3969 transitions. Word has length 26 [2021-06-12 18:53:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:28,319 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 3969 transitions. [2021-06-12 18:53:28,319 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) [2021-06-12 18:53:28,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 3969 transitions. [2021-06-12 18:53:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:28,320 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:28,320 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:28,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-12 18:53:28,320 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1813146598, now seen corresponding path program 198 times [2021-06-12 18:53:28,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:28,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003800173] [2021-06-12 18:53:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:28,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:28,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003800173] [2021-06-12 18:53:28,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003800173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:28,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:28,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:28,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999996781] [2021-06-12 18:53:28,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:28,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:28,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:28,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:28,373 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) [2021-06-12 18:53:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:28,506 INFO L93 Difference]: Finished difference Result 1611 states and 4507 transitions. [2021-06-12 18:53:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:28,507 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 [2021-06-12 18:53:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:28,509 INFO L225 Difference]: With dead ends: 1611 [2021-06-12 18:53:28,509 INFO L226 Difference]: Without dead ends: 1524 [2021-06-12 18:53:28,509 INFO L728 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 [2021-06-12 18:53:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-06-12 18:53:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1406. [2021-06-12 18:53:28,522 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) [2021-06-12 18:53:28,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 3972 transitions. [2021-06-12 18:53:28,523 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 3972 transitions. Word has length 26 [2021-06-12 18:53:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:28,523 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 3972 transitions. [2021-06-12 18:53:28,523 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) [2021-06-12 18:53:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 3972 transitions. [2021-06-12 18:53:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:28,525 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:28,525 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:28,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-12 18:53:28,525 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1741697498, now seen corresponding path program 199 times [2021-06-12 18:53:28,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:28,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356561227] [2021-06-12 18:53:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:28,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:28,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356561227] [2021-06-12 18:53:28,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356561227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:28,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:28,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:28,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095415443] [2021-06-12 18:53:28,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:28,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:28,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:28,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:28,594 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) [2021-06-12 18:53:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:28,766 INFO L93 Difference]: Finished difference Result 1550 states and 4346 transitions. [2021-06-12 18:53:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:28,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:28,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:28,770 INFO L225 Difference]: With dead ends: 1550 [2021-06-12 18:53:28,770 INFO L226 Difference]: Without dead ends: 1462 [2021-06-12 18:53:28,771 INFO L728 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 [2021-06-12 18:53:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-06-12 18:53:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1408. [2021-06-12 18:53:28,783 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) [2021-06-12 18:53:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 3979 transitions. [2021-06-12 18:53:28,785 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 3979 transitions. Word has length 26 [2021-06-12 18:53:28,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:28,785 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 3979 transitions. [2021-06-12 18:53:28,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 3979 transitions. [2021-06-12 18:53:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:28,786 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:28,786 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:28,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-12 18:53:28,787 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:28,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:28,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1029629656, now seen corresponding path program 200 times [2021-06-12 18:53:28,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:28,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390775716] [2021-06-12 18:53:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:28,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:28,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390775716] [2021-06-12 18:53:28,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390775716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:28,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:28,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:28,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209828276] [2021-06-12 18:53:28,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:28,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:28,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:28,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:28,845 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) [2021-06-12 18:53:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:29,018 INFO L93 Difference]: Finished difference Result 1554 states and 4338 transitions. [2021-06-12 18:53:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:29,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:29,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:29,020 INFO L225 Difference]: With dead ends: 1554 [2021-06-12 18:53:29,020 INFO L226 Difference]: Without dead ends: 1468 [2021-06-12 18:53:29,020 INFO L728 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 [2021-06-12 18:53:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-06-12 18:53:29,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1407. [2021-06-12 18:53:29,054 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) [2021-06-12 18:53:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-06-12 18:53:29,056 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-06-12 18:53:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:29,056 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-06-12 18:53:29,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-06-12 18:53:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:29,057 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:29,057 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:29,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-12 18:53:29,058 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:29,058 INFO L82 PathProgramCache]: Analyzing trace with hash 349552952, now seen corresponding path program 201 times [2021-06-12 18:53:29,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:29,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125897828] [2021-06-12 18:53:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:29,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:29,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125897828] [2021-06-12 18:53:29,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125897828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:29,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:29,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:29,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774453576] [2021-06-12 18:53:29,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:29,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:29,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:29,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:29,113 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) [2021-06-12 18:53:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:29,275 INFO L93 Difference]: Finished difference Result 1620 states and 4536 transitions. [2021-06-12 18:53:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:29,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:29,277 INFO L225 Difference]: With dead ends: 1620 [2021-06-12 18:53:29,278 INFO L226 Difference]: Without dead ends: 1523 [2021-06-12 18:53:29,278 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-06-12 18:53:29,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1419. [2021-06-12 18:53:29,290 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) [2021-06-12 18:53:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4001 transitions. [2021-06-12 18:53:29,292 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4001 transitions. Word has length 26 [2021-06-12 18:53:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:29,292 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4001 transitions. [2021-06-12 18:53:29,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4001 transitions. [2021-06-12 18:53:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:29,293 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:29,293 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:29,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-12 18:53:29,293 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:29,294 INFO L82 PathProgramCache]: Analyzing trace with hash 939870006, now seen corresponding path program 202 times [2021-06-12 18:53:29,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:29,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645586700] [2021-06-12 18:53:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:29,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:29,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645586700] [2021-06-12 18:53:29,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645586700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:29,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:29,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:29,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970190358] [2021-06-12 18:53:29,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:29,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:29,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:29,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:29,355 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) [2021-06-12 18:53:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:29,521 INFO L93 Difference]: Finished difference Result 1652 states and 4605 transitions. [2021-06-12 18:53:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:29,524 INFO L225 Difference]: With dead ends: 1652 [2021-06-12 18:53:29,524 INFO L226 Difference]: Without dead ends: 1563 [2021-06-12 18:53:29,524 INFO L728 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 [2021-06-12 18:53:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-06-12 18:53:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1418. [2021-06-12 18:53:29,537 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) [2021-06-12 18:53:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4000 transitions. [2021-06-12 18:53:29,538 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4000 transitions. Word has length 26 [2021-06-12 18:53:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:29,539 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 4000 transitions. [2021-06-12 18:53:29,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4000 transitions. [2021-06-12 18:53:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:29,540 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:29,540 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:29,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-12 18:53:29,540 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:29,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:29,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2043486036, now seen corresponding path program 203 times [2021-06-12 18:53:29,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:29,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179453799] [2021-06-12 18:53:29,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:29,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:29,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179453799] [2021-06-12 18:53:29,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179453799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:29,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:29,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:29,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615435223] [2021-06-12 18:53:29,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:29,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:29,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:29,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:29,591 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) [2021-06-12 18:53:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:29,720 INFO L93 Difference]: Finished difference Result 1692 states and 4710 transitions. [2021-06-12 18:53:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:29,721 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 [2021-06-12 18:53:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:29,722 INFO L225 Difference]: With dead ends: 1692 [2021-06-12 18:53:29,722 INFO L226 Difference]: Without dead ends: 1504 [2021-06-12 18:53:29,723 INFO L728 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 [2021-06-12 18:53:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-06-12 18:53:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1400. [2021-06-12 18:53:29,735 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) [2021-06-12 18:53:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3920 transitions. [2021-06-12 18:53:29,737 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3920 transitions. Word has length 26 [2021-06-12 18:53:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:29,737 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3920 transitions. [2021-06-12 18:53:29,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3920 transitions. [2021-06-12 18:53:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:29,738 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:29,738 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:29,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-12 18:53:29,738 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:29,738 INFO L82 PathProgramCache]: Analyzing trace with hash 672049614, now seen corresponding path program 204 times [2021-06-12 18:53:29,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:29,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642799722] [2021-06-12 18:53:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:29,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:29,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642799722] [2021-06-12 18:53:29,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642799722] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:29,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:29,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:29,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406827675] [2021-06-12 18:53:29,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:29,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:29,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:29,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:29,796 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) [2021-06-12 18:53:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:29,960 INFO L93 Difference]: Finished difference Result 1597 states and 4423 transitions. [2021-06-12 18:53:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:29,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:29,962 INFO L225 Difference]: With dead ends: 1597 [2021-06-12 18:53:29,962 INFO L226 Difference]: Without dead ends: 1470 [2021-06-12 18:53:29,963 INFO L728 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 [2021-06-12 18:53:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-06-12 18:53:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1368. [2021-06-12 18:53:29,974 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) [2021-06-12 18:53:29,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3839 transitions. [2021-06-12 18:53:29,976 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3839 transitions. Word has length 26 [2021-06-12 18:53:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:29,976 INFO L482 AbstractCegarLoop]: Abstraction has 1368 states and 3839 transitions. [2021-06-12 18:53:29,976 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) [2021-06-12 18:53:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3839 transitions. [2021-06-12 18:53:29,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:29,978 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:29,978 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:29,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-12 18:53:29,978 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:29,978 INFO L82 PathProgramCache]: Analyzing trace with hash 680919408, now seen corresponding path program 205 times [2021-06-12 18:53:29,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:29,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566000266] [2021-06-12 18:53:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:30,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:30,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566000266] [2021-06-12 18:53:30,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566000266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:30,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:30,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:30,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116606748] [2021-06-12 18:53:30,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:30,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:30,045 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) [2021-06-12 18:53:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:30,208 INFO L93 Difference]: Finished difference Result 1512 states and 4214 transitions. [2021-06-12 18:53:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:30,208 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 [2021-06-12 18:53:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:30,210 INFO L225 Difference]: With dead ends: 1512 [2021-06-12 18:53:30,210 INFO L226 Difference]: Without dead ends: 1424 [2021-06-12 18:53:30,210 INFO L728 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 [2021-06-12 18:53:30,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-06-12 18:53:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1371. [2021-06-12 18:53:30,222 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) [2021-06-12 18:53:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 3847 transitions. [2021-06-12 18:53:30,223 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 3847 transitions. Word has length 26 [2021-06-12 18:53:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:30,223 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 3847 transitions. [2021-06-12 18:53:30,224 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) [2021-06-12 18:53:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 3847 transitions. [2021-06-12 18:53:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:30,225 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:30,225 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:30,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-12 18:53:30,225 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash -31148434, now seen corresponding path program 206 times [2021-06-12 18:53:30,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:30,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855348271] [2021-06-12 18:53:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:30,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:30,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855348271] [2021-06-12 18:53:30,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855348271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:30,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:30,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:30,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326831711] [2021-06-12 18:53:30,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:30,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:30,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:30,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:30,283 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) [2021-06-12 18:53:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:30,448 INFO L93 Difference]: Finished difference Result 1563 states and 4321 transitions. [2021-06-12 18:53:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:30,448 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 [2021-06-12 18:53:30,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:30,450 INFO L225 Difference]: With dead ends: 1563 [2021-06-12 18:53:30,450 INFO L226 Difference]: Without dead ends: 1477 [2021-06-12 18:53:30,450 INFO L728 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 [2021-06-12 18:53:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-06-12 18:53:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1369. [2021-06-12 18:53:30,462 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) [2021-06-12 18:53:30,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 3839 transitions. [2021-06-12 18:53:30,464 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 3839 transitions. Word has length 26 [2021-06-12 18:53:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:30,464 INFO L482 AbstractCegarLoop]: Abstraction has 1369 states and 3839 transitions. [2021-06-12 18:53:30,464 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) [2021-06-12 18:53:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 3839 transitions. [2021-06-12 18:53:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:30,465 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:30,465 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:30,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-12 18:53:30,466 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash -711225138, now seen corresponding path program 207 times [2021-06-12 18:53:30,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:30,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749869893] [2021-06-12 18:53:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:30,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:30,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749869893] [2021-06-12 18:53:30,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749869893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:30,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:30,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:30,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306844219] [2021-06-12 18:53:30,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:30,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:30,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:30,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:30,523 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) [2021-06-12 18:53:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:30,685 INFO L93 Difference]: Finished difference Result 1575 states and 4380 transitions. [2021-06-12 18:53:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:30,685 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 [2021-06-12 18:53:30,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:30,686 INFO L225 Difference]: With dead ends: 1575 [2021-06-12 18:53:30,687 INFO L226 Difference]: Without dead ends: 1464 [2021-06-12 18:53:30,687 INFO L728 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 [2021-06-12 18:53:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-12 18:53:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1349. [2021-06-12 18:53:30,699 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) [2021-06-12 18:53:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 3784 transitions. [2021-06-12 18:53:30,700 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 3784 transitions. Word has length 26 [2021-06-12 18:53:30,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:30,700 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 3784 transitions. [2021-06-12 18:53:30,701 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) [2021-06-12 18:53:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 3784 transitions. [2021-06-12 18:53:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:30,702 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:30,702 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:30,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-12 18:53:30,702 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:30,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:30,702 INFO L82 PathProgramCache]: Analyzing trace with hash 40111740, now seen corresponding path program 208 times [2021-06-12 18:53:30,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:30,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532032175] [2021-06-12 18:53:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:30,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:30,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532032175] [2021-06-12 18:53:30,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532032175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:30,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:30,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:30,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427334595] [2021-06-12 18:53:30,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:30,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:30,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:30,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:30,751 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) [2021-06-12 18:53:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:30,895 INFO L93 Difference]: Finished difference Result 1533 states and 4263 transitions. [2021-06-12 18:53:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:30,895 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 [2021-06-12 18:53:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:30,897 INFO L225 Difference]: With dead ends: 1533 [2021-06-12 18:53:30,897 INFO L226 Difference]: Without dead ends: 1448 [2021-06-12 18:53:30,897 INFO L728 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 [2021-06-12 18:53:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-06-12 18:53:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1355. [2021-06-12 18:53:30,909 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) [2021-06-12 18:53:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3794 transitions. [2021-06-12 18:53:30,911 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3794 transitions. Word has length 26 [2021-06-12 18:53:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:30,911 INFO L482 AbstractCegarLoop]: Abstraction has 1355 states and 3794 transitions. [2021-06-12 18:53:30,911 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) [2021-06-12 18:53:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3794 transitions. [2021-06-12 18:53:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:30,912 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:30,912 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:30,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-12 18:53:30,912 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:30,912 INFO L82 PathProgramCache]: Analyzing trace with hash 909556348, now seen corresponding path program 209 times [2021-06-12 18:53:30,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:30,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472842076] [2021-06-12 18:53:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:30,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:30,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472842076] [2021-06-12 18:53:30,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472842076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:30,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:30,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:30,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573266099] [2021-06-12 18:53:30,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:30,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:30,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:30,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:30,961 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) [2021-06-12 18:53:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:31,101 INFO L93 Difference]: Finished difference Result 1554 states and 4325 transitions. [2021-06-12 18:53:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:31,101 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 [2021-06-12 18:53:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:31,103 INFO L225 Difference]: With dead ends: 1554 [2021-06-12 18:53:31,103 INFO L226 Difference]: Without dead ends: 1459 [2021-06-12 18:53:31,103 INFO L728 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 [2021-06-12 18:53:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-06-12 18:53:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1367. [2021-06-12 18:53:31,115 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) [2021-06-12 18:53:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 3823 transitions. [2021-06-12 18:53:31,117 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 3823 transitions. Word has length 26 [2021-06-12 18:53:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:31,117 INFO L482 AbstractCegarLoop]: Abstraction has 1367 states and 3823 transitions. [2021-06-12 18:53:31,117 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) [2021-06-12 18:53:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 3823 transitions. [2021-06-12 18:53:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:31,118 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:31,118 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:31,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-12 18:53:31,118 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash -559154882, now seen corresponding path program 210 times [2021-06-12 18:53:31,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:31,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786009089] [2021-06-12 18:53:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:31,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:31,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786009089] [2021-06-12 18:53:31,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786009089] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:31,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:31,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:31,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541717368] [2021-06-12 18:53:31,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:31,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:31,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:31,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:31,178 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) [2021-06-12 18:53:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:31,354 INFO L93 Difference]: Finished difference Result 1615 states and 4457 transitions. [2021-06-12 18:53:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:31,354 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 [2021-06-12 18:53:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:31,356 INFO L225 Difference]: With dead ends: 1615 [2021-06-12 18:53:31,356 INFO L226 Difference]: Without dead ends: 1530 [2021-06-12 18:53:31,356 INFO L728 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 [2021-06-12 18:53:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-12 18:53:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1391. [2021-06-12 18:53:31,368 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) [2021-06-12 18:53:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 3889 transitions. [2021-06-12 18:53:31,370 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 3889 transitions. Word has length 26 [2021-06-12 18:53:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:31,370 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 3889 transitions. [2021-06-12 18:53:31,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 3889 transitions. [2021-06-12 18:53:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:31,372 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:31,372 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:31,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-12 18:53:31,372 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:31,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:31,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1132552158, now seen corresponding path program 211 times [2021-06-12 18:53:31,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:31,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121487039] [2021-06-12 18:53:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:31,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:31,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121487039] [2021-06-12 18:53:31,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121487039] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:31,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:31,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:31,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087221286] [2021-06-12 18:53:31,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:31,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:31,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:31,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:31,431 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) [2021-06-12 18:53:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:31,596 INFO L93 Difference]: Finished difference Result 1549 states and 4282 transitions. [2021-06-12 18:53:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:31,596 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:31,598 INFO L225 Difference]: With dead ends: 1549 [2021-06-12 18:53:31,598 INFO L226 Difference]: Without dead ends: 1466 [2021-06-12 18:53:31,598 INFO L728 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 [2021-06-12 18:53:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-06-12 18:53:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1397. [2021-06-12 18:53:31,610 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) [2021-06-12 18:53:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3897 transitions. [2021-06-12 18:53:31,612 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3897 transitions. Word has length 26 [2021-06-12 18:53:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:31,612 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 3897 transitions. [2021-06-12 18:53:31,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3897 transitions. [2021-06-12 18:53:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:31,614 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:31,614 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:31,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-12 18:53:31,614 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:31,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:31,614 INFO L82 PathProgramCache]: Analyzing trace with hash -546001310, now seen corresponding path program 212 times [2021-06-12 18:53:31,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:31,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894833071] [2021-06-12 18:53:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:31,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:31,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894833071] [2021-06-12 18:53:31,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894833071] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:31,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:31,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:31,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366982208] [2021-06-12 18:53:31,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:31,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:31,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:31,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:31,672 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) [2021-06-12 18:53:31,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:31,845 INFO L93 Difference]: Finished difference Result 1624 states and 4492 transitions. [2021-06-12 18:53:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:31,845 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 [2021-06-12 18:53:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:31,847 INFO L225 Difference]: With dead ends: 1624 [2021-06-12 18:53:31,847 INFO L226 Difference]: Without dead ends: 1536 [2021-06-12 18:53:31,847 INFO L728 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 [2021-06-12 18:53:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-06-12 18:53:31,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1423. [2021-06-12 18:53:31,860 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) [2021-06-12 18:53:31,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3973 transitions. [2021-06-12 18:53:31,862 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3973 transitions. Word has length 26 [2021-06-12 18:53:31,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:31,862 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 3973 transitions. [2021-06-12 18:53:31,862 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) [2021-06-12 18:53:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3973 transitions. [2021-06-12 18:53:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:31,863 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:31,863 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:31,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-12 18:53:31,863 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:31,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1258069152, now seen corresponding path program 213 times [2021-06-12 18:53:31,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:31,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943191859] [2021-06-12 18:53:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:31,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:31,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943191859] [2021-06-12 18:53:31,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943191859] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:31,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:31,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:31,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107319122] [2021-06-12 18:53:31,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:31,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:31,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:31,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:31,922 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) [2021-06-12 18:53:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:32,090 INFO L93 Difference]: Finished difference Result 1572 states and 4345 transitions. [2021-06-12 18:53:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:32,090 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:32,092 INFO L225 Difference]: With dead ends: 1572 [2021-06-12 18:53:32,092 INFO L226 Difference]: Without dead ends: 1484 [2021-06-12 18:53:32,092 INFO L728 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 [2021-06-12 18:53:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-06-12 18:53:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1415. [2021-06-12 18:53:32,105 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) [2021-06-12 18:53:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 3958 transitions. [2021-06-12 18:53:32,107 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 3958 transitions. Word has length 26 [2021-06-12 18:53:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:32,107 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 3958 transitions. [2021-06-12 18:53:32,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:32,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 3958 transitions. [2021-06-12 18:53:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:32,108 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:32,109 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:32,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-12 18:53:32,109 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash -92316360, now seen corresponding path program 214 times [2021-06-12 18:53:32,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:32,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721175689] [2021-06-12 18:53:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:32,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:32,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721175689] [2021-06-12 18:53:32,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721175689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:32,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:32,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:32,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496399335] [2021-06-12 18:53:32,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:32,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:32,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:32,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:32,174 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) [2021-06-12 18:53:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:32,341 INFO L93 Difference]: Finished difference Result 1653 states and 4558 transitions. [2021-06-12 18:53:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:32,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:32,343 INFO L225 Difference]: With dead ends: 1653 [2021-06-12 18:53:32,343 INFO L226 Difference]: Without dead ends: 1514 [2021-06-12 18:53:32,343 INFO L728 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 [2021-06-12 18:53:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-06-12 18:53:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1381. [2021-06-12 18:53:32,355 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) [2021-06-12 18:53:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3860 transitions. [2021-06-12 18:53:32,357 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 3860 transitions. Word has length 26 [2021-06-12 18:53:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:32,357 INFO L482 AbstractCegarLoop]: Abstraction has 1381 states and 3860 transitions. [2021-06-12 18:53:32,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 3860 transitions. [2021-06-12 18:53:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:32,358 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:32,359 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:32,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-12 18:53:32,359 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:32,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:32,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1103631634, now seen corresponding path program 215 times [2021-06-12 18:53:32,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:32,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070732758] [2021-06-12 18:53:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:32,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:32,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070732758] [2021-06-12 18:53:32,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070732758] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:32,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:32,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:32,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437550597] [2021-06-12 18:53:32,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:32,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:32,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:32,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:32,419 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) [2021-06-12 18:53:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:32,585 INFO L93 Difference]: Finished difference Result 1627 states and 4481 transitions. [2021-06-12 18:53:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:32,585 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 [2021-06-12 18:53:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:32,587 INFO L225 Difference]: With dead ends: 1627 [2021-06-12 18:53:32,587 INFO L226 Difference]: Without dead ends: 1465 [2021-06-12 18:53:32,587 INFO L728 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 [2021-06-12 18:53:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-06-12 18:53:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1360. [2021-06-12 18:53:32,599 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) [2021-06-12 18:53:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3804 transitions. [2021-06-12 18:53:32,601 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3804 transitions. Word has length 26 [2021-06-12 18:53:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:32,601 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3804 transitions. [2021-06-12 18:53:32,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3804 transitions. [2021-06-12 18:53:32,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:32,602 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:32,602 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:32,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-12 18:53:32,602 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:32,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:32,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1441326566, now seen corresponding path program 216 times [2021-06-12 18:53:32,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:32,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884041304] [2021-06-12 18:53:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:32,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:32,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884041304] [2021-06-12 18:53:32,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884041304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:32,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:32,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:32,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446515234] [2021-06-12 18:53:32,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:32,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:32,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:32,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:32,661 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) [2021-06-12 18:53:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:32,830 INFO L93 Difference]: Finished difference Result 1494 states and 4137 transitions. [2021-06-12 18:53:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:32,830 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 [2021-06-12 18:53:32,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:32,832 INFO L225 Difference]: With dead ends: 1494 [2021-06-12 18:53:32,832 INFO L226 Difference]: Without dead ends: 1409 [2021-06-12 18:53:32,832 INFO L728 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 [2021-06-12 18:53:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-06-12 18:53:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1353. [2021-06-12 18:53:32,844 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) [2021-06-12 18:53:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 3778 transitions. [2021-06-12 18:53:32,846 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 3778 transitions. Word has length 26 [2021-06-12 18:53:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:32,846 INFO L482 AbstractCegarLoop]: Abstraction has 1353 states and 3778 transitions. [2021-06-12 18:53:32,846 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) [2021-06-12 18:53:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 3778 transitions. [2021-06-12 18:53:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:32,847 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:32,847 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:32,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-12 18:53:32,847 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:32,848 INFO L82 PathProgramCache]: Analyzing trace with hash -571881958, now seen corresponding path program 217 times [2021-06-12 18:53:32,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:32,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597242630] [2021-06-12 18:53:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:32,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:32,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597242630] [2021-06-12 18:53:32,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597242630] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:32,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:32,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:32,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864156045] [2021-06-12 18:53:32,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:32,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:32,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:32,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:32,906 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) [2021-06-12 18:53:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:33,071 INFO L93 Difference]: Finished difference Result 1511 states and 4172 transitions. [2021-06-12 18:53:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:33,072 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:33,073 INFO L225 Difference]: With dead ends: 1511 [2021-06-12 18:53:33,073 INFO L226 Difference]: Without dead ends: 1416 [2021-06-12 18:53:33,073 INFO L728 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 [2021-06-12 18:53:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-12 18:53:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1354. [2021-06-12 18:53:33,085 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) [2021-06-12 18:53:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 3779 transitions. [2021-06-12 18:53:33,087 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 3779 transitions. Word has length 26 [2021-06-12 18:53:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:33,087 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 3779 transitions. [2021-06-12 18:53:33,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 3779 transitions. [2021-06-12 18:53:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:33,088 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:33,088 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:33,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-12 18:53:33,088 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2040593188, now seen corresponding path program 218 times [2021-06-12 18:53:33,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:33,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078661474] [2021-06-12 18:53:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:33,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:33,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078661474] [2021-06-12 18:53:33,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078661474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:33,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:33,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:33,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023328195] [2021-06-12 18:53:33,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:33,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:33,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:33,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:33,146 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) [2021-06-12 18:53:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:33,314 INFO L93 Difference]: Finished difference Result 1525 states and 4210 transitions. [2021-06-12 18:53:33,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:33,314 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 [2021-06-12 18:53:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:33,316 INFO L225 Difference]: With dead ends: 1525 [2021-06-12 18:53:33,316 INFO L226 Difference]: Without dead ends: 1440 [2021-06-12 18:53:33,316 INFO L728 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 [2021-06-12 18:53:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-06-12 18:53:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1356. [2021-06-12 18:53:33,327 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) [2021-06-12 18:53:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3787 transitions. [2021-06-12 18:53:33,329 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3787 transitions. Word has length 26 [2021-06-12 18:53:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:33,329 INFO L482 AbstractCegarLoop]: Abstraction has 1356 states and 3787 transitions. [2021-06-12 18:53:33,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3787 transitions. [2021-06-12 18:53:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:33,331 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:33,331 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:33,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-12 18:53:33,331 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1680976832, now seen corresponding path program 219 times [2021-06-12 18:53:33,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:33,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862045072] [2021-06-12 18:53:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:33,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:33,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862045072] [2021-06-12 18:53:33,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862045072] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:33,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:33,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:33,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324084814] [2021-06-12 18:53:33,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:33,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:33,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:33,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:33,390 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) [2021-06-12 18:53:33,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:33,564 INFO L93 Difference]: Finished difference Result 1497 states and 4138 transitions. [2021-06-12 18:53:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:33,564 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 [2021-06-12 18:53:33,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:33,566 INFO L225 Difference]: With dead ends: 1497 [2021-06-12 18:53:33,566 INFO L226 Difference]: Without dead ends: 1414 [2021-06-12 18:53:33,567 INFO L728 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 [2021-06-12 18:53:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-06-12 18:53:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1357. [2021-06-12 18:53:33,578 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) [2021-06-12 18:53:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 3789 transitions. [2021-06-12 18:53:33,580 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 3789 transitions. Word has length 26 [2021-06-12 18:53:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:33,580 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 3789 transitions. [2021-06-12 18:53:33,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 3789 transitions. [2021-06-12 18:53:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:33,581 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:33,581 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:33,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-12 18:53:33,581 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2027439616, now seen corresponding path program 220 times [2021-06-12 18:53:33,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:33,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744557520] [2021-06-12 18:53:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:33,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:33,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744557520] [2021-06-12 18:53:33,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744557520] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:33,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:33,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:33,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050741539] [2021-06-12 18:53:33,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:33,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:33,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:33,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:33,783 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) [2021-06-12 18:53:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:33,944 INFO L93 Difference]: Finished difference Result 1489 states and 4130 transitions. [2021-06-12 18:53:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:33,944 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 [2021-06-12 18:53:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:33,946 INFO L225 Difference]: With dead ends: 1489 [2021-06-12 18:53:33,946 INFO L226 Difference]: Without dead ends: 1401 [2021-06-12 18:53:33,946 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 193.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-06-12 18:53:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1361. [2021-06-12 18:53:33,961 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) [2021-06-12 18:53:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 3801 transitions. [2021-06-12 18:53:33,963 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 3801 transitions. Word has length 26 [2021-06-12 18:53:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:33,963 INFO L482 AbstractCegarLoop]: Abstraction has 1361 states and 3801 transitions. [2021-06-12 18:53:33,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:33,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 3801 transitions. [2021-06-12 18:53:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:33,964 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:33,964 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:33,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-12 18:53:33,964 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:33,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1555459838, now seen corresponding path program 221 times [2021-06-12 18:53:33,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:33,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941753161] [2021-06-12 18:53:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:34,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:34,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941753161] [2021-06-12 18:53:34,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941753161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:34,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:34,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:34,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188533529] [2021-06-12 18:53:34,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:34,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:34,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:34,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:34,022 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) [2021-06-12 18:53:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:34,186 INFO L93 Difference]: Finished difference Result 1502 states and 4148 transitions. [2021-06-12 18:53:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:34,186 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 [2021-06-12 18:53:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:34,188 INFO L225 Difference]: With dead ends: 1502 [2021-06-12 18:53:34,188 INFO L226 Difference]: Without dead ends: 1414 [2021-06-12 18:53:34,188 INFO L728 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 [2021-06-12 18:53:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-06-12 18:53:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1360. [2021-06-12 18:53:34,200 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) [2021-06-12 18:53:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3801 transitions. [2021-06-12 18:53:34,202 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3801 transitions. Word has length 26 [2021-06-12 18:53:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:34,202 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3801 transitions. [2021-06-12 18:53:34,202 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) [2021-06-12 18:53:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3801 transitions. [2021-06-12 18:53:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:34,203 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:34,203 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:34,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-12 18:53:34,203 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:34,203 INFO L82 PathProgramCache]: Analyzing trace with hash -528175042, now seen corresponding path program 222 times [2021-06-12 18:53:34,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:34,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330379037] [2021-06-12 18:53:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:34,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:34,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330379037] [2021-06-12 18:53:34,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330379037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:34,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:34,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:34,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369333575] [2021-06-12 18:53:34,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:34,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:34,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:34,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:34,274 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) [2021-06-12 18:53:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:34,439 INFO L93 Difference]: Finished difference Result 1528 states and 4222 transitions. [2021-06-12 18:53:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:34,439 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:34,442 INFO L225 Difference]: With dead ends: 1528 [2021-06-12 18:53:34,442 INFO L226 Difference]: Without dead ends: 1443 [2021-06-12 18:53:34,442 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-06-12 18:53:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1358. [2021-06-12 18:53:34,454 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) [2021-06-12 18:53:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3793 transitions. [2021-06-12 18:53:34,456 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3793 transitions. Word has length 26 [2021-06-12 18:53:34,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:34,456 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3793 transitions. [2021-06-12 18:53:34,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3793 transitions. [2021-06-12 18:53:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:34,457 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:34,457 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:34,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-12 18:53:34,457 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:34,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1101572318, now seen corresponding path program 223 times [2021-06-12 18:53:34,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:34,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845188962] [2021-06-12 18:53:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:34,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:34,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845188962] [2021-06-12 18:53:34,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845188962] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:34,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:34,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:34,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556185658] [2021-06-12 18:53:34,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:34,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:34,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:34,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:34,530 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) [2021-06-12 18:53:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:34,694 INFO L93 Difference]: Finished difference Result 1519 states and 4205 transitions. [2021-06-12 18:53:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:34,701 INFO L225 Difference]: With dead ends: 1519 [2021-06-12 18:53:34,701 INFO L226 Difference]: Without dead ends: 1436 [2021-06-12 18:53:34,701 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-06-12 18:53:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1359. [2021-06-12 18:53:34,712 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) [2021-06-12 18:53:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-06-12 18:53:34,714 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-06-12 18:53:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:34,714 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-06-12 18:53:34,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:34,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-06-12 18:53:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:34,715 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:34,715 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:34,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-12 18:53:34,715 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:34,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1944327842, now seen corresponding path program 224 times [2021-06-12 18:53:34,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:34,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174238664] [2021-06-12 18:53:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:34,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:34,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174238664] [2021-06-12 18:53:34,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174238664] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:34,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:34,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:34,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543348295] [2021-06-12 18:53:34,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:34,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:34,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:34,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:34,775 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) [2021-06-12 18:53:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:34,935 INFO L93 Difference]: Finished difference Result 1503 states and 4164 transitions. [2021-06-12 18:53:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:34,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:34,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:34,937 INFO L225 Difference]: With dead ends: 1503 [2021-06-12 18:53:34,937 INFO L226 Difference]: Without dead ends: 1416 [2021-06-12 18:53:34,937 INFO L728 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 [2021-06-12 18:53:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-12 18:53:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1358. [2021-06-12 18:53:34,948 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) [2021-06-12 18:53:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3792 transitions. [2021-06-12 18:53:34,950 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3792 transitions. Word has length 26 [2021-06-12 18:53:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:34,950 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3792 transitions. [2021-06-12 18:53:34,950 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) [2021-06-12 18:53:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3792 transitions. [2021-06-12 18:53:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:34,951 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:34,952 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:34,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-12 18:53:34,952 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:34,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1204204642, now seen corresponding path program 225 times [2021-06-12 18:53:34,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:34,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655810274] [2021-06-12 18:53:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:35,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:35,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655810274] [2021-06-12 18:53:35,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655810274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:35,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:35,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:35,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450891503] [2021-06-12 18:53:35,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:35,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:35,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:35,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:35,010 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) [2021-06-12 18:53:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:35,169 INFO L93 Difference]: Finished difference Result 1491 states and 4141 transitions. [2021-06-12 18:53:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:35,171 INFO L225 Difference]: With dead ends: 1491 [2021-06-12 18:53:35,171 INFO L226 Difference]: Without dead ends: 1403 [2021-06-12 18:53:35,171 INFO L728 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 [2021-06-12 18:53:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-06-12 18:53:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1360. [2021-06-12 18:53:35,182 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) [2021-06-12 18:53:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3799 transitions. [2021-06-12 18:53:35,184 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3799 transitions. Word has length 26 [2021-06-12 18:53:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:35,184 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3799 transitions. [2021-06-12 18:53:35,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:35,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3799 transitions. [2021-06-12 18:53:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:35,185 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:35,185 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:35,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-12 18:53:35,186 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:35,186 INFO L82 PathProgramCache]: Analyzing trace with hash 492136800, now seen corresponding path program 226 times [2021-06-12 18:53:35,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:35,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167869707] [2021-06-12 18:53:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:35,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:35,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167869707] [2021-06-12 18:53:35,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167869707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:35,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:35,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:35,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892091207] [2021-06-12 18:53:35,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:35,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:35,243 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) [2021-06-12 18:53:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:35,410 INFO L93 Difference]: Finished difference Result 1499 states and 4143 transitions. [2021-06-12 18:53:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:35,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:35,412 INFO L225 Difference]: With dead ends: 1499 [2021-06-12 18:53:35,412 INFO L226 Difference]: Without dead ends: 1413 [2021-06-12 18:53:35,412 INFO L728 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 [2021-06-12 18:53:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-06-12 18:53:35,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1359. [2021-06-12 18:53:35,424 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) [2021-06-12 18:53:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-06-12 18:53:35,426 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-06-12 18:53:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:35,426 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-06-12 18:53:35,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-06-12 18:53:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:35,427 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:35,427 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:35,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-12 18:53:35,428 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:35,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:35,428 INFO L82 PathProgramCache]: Analyzing trace with hash -187939904, now seen corresponding path program 227 times [2021-06-12 18:53:35,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:35,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171492518] [2021-06-12 18:53:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:35,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:35,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171492518] [2021-06-12 18:53:35,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171492518] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:35,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:35,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:35,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382617665] [2021-06-12 18:53:35,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:35,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:35,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:35,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:35,486 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) [2021-06-12 18:53:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:35,668 INFO L93 Difference]: Finished difference Result 1555 states and 4298 transitions. [2021-06-12 18:53:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:35,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:35,670 INFO L225 Difference]: With dead ends: 1555 [2021-06-12 18:53:35,670 INFO L226 Difference]: Without dead ends: 1458 [2021-06-12 18:53:35,670 INFO L728 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 [2021-06-12 18:53:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-06-12 18:53:35,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1352. [2021-06-12 18:53:35,682 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) [2021-06-12 18:53:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 3769 transitions. [2021-06-12 18:53:35,684 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 3769 transitions. Word has length 26 [2021-06-12 18:53:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:35,684 INFO L482 AbstractCegarLoop]: Abstraction has 1352 states and 3769 transitions. [2021-06-12 18:53:35,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 3769 transitions. [2021-06-12 18:53:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:35,685 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:35,685 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:35,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-12 18:53:35,685 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash 402377150, now seen corresponding path program 228 times [2021-06-12 18:53:35,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:35,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553426747] [2021-06-12 18:53:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:35,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:35,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553426747] [2021-06-12 18:53:35,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553426747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:35,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:35,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:35,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558629492] [2021-06-12 18:53:35,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:35,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:35,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:35,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:35,746 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) [2021-06-12 18:53:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:35,910 INFO L93 Difference]: Finished difference Result 1504 states and 4155 transitions. [2021-06-12 18:53:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:35,910 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 [2021-06-12 18:53:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:35,912 INFO L225 Difference]: With dead ends: 1504 [2021-06-12 18:53:35,912 INFO L226 Difference]: Without dead ends: 1415 [2021-06-12 18:53:35,912 INFO L728 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 [2021-06-12 18:53:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-06-12 18:53:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1347. [2021-06-12 18:53:35,923 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) [2021-06-12 18:53:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 3758 transitions. [2021-06-12 18:53:35,925 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 3758 transitions. Word has length 26 [2021-06-12 18:53:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:35,925 INFO L482 AbstractCegarLoop]: Abstraction has 1347 states and 3758 transitions. [2021-06-12 18:53:35,925 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) [2021-06-12 18:53:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 3758 transitions. [2021-06-12 18:53:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:35,927 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:35,927 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:35,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-12 18:53:35,927 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:35,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1005160398, now seen corresponding path program 229 times [2021-06-12 18:53:35,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:35,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367927209] [2021-06-12 18:53:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:35,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:35,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367927209] [2021-06-12 18:53:35,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367927209] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:35,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:35,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:35,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955305921] [2021-06-12 18:53:35,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:35,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:35,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:35,976 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) [2021-06-12 18:53:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:36,106 INFO L93 Difference]: Finished difference Result 1541 states and 4265 transitions. [2021-06-12 18:53:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:36,106 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 [2021-06-12 18:53:36,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:36,108 INFO L225 Difference]: With dead ends: 1541 [2021-06-12 18:53:36,108 INFO L226 Difference]: Without dead ends: 1453 [2021-06-12 18:53:36,108 INFO L728 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 [2021-06-12 18:53:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-12 18:53:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1373. [2021-06-12 18:53:36,120 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) [2021-06-12 18:53:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 3834 transitions. [2021-06-12 18:53:36,121 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 3834 transitions. Word has length 26 [2021-06-12 18:53:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:36,122 INFO L482 AbstractCegarLoop]: Abstraction has 1373 states and 3834 transitions. [2021-06-12 18:53:36,122 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) [2021-06-12 18:53:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 3834 transitions. [2021-06-12 18:53:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:36,123 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:36,123 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:36,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-12 18:53:36,123 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:36,123 INFO L82 PathProgramCache]: Analyzing trace with hash 293092556, now seen corresponding path program 230 times [2021-06-12 18:53:36,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:36,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349977014] [2021-06-12 18:53:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:36,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:36,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349977014] [2021-06-12 18:53:36,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349977014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:36,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:36,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:36,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768879170] [2021-06-12 18:53:36,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:36,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:36,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:36,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:36,182 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) [2021-06-12 18:53:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:36,345 INFO L93 Difference]: Finished difference Result 1604 states and 4405 transitions. [2021-06-12 18:53:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:36,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:36,347 INFO L225 Difference]: With dead ends: 1604 [2021-06-12 18:53:36,347 INFO L226 Difference]: Without dead ends: 1393 [2021-06-12 18:53:36,347 INFO L728 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 [2021-06-12 18:53:36,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-06-12 18:53:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1293. [2021-06-12 18:53:36,359 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) [2021-06-12 18:53:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3593 transitions. [2021-06-12 18:53:36,360 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3593 transitions. Word has length 26 [2021-06-12 18:53:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:36,360 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3593 transitions. [2021-06-12 18:53:36,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3593 transitions. [2021-06-12 18:53:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:36,361 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:36,362 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:36,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-12 18:53:36,362 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:36,362 INFO L82 PathProgramCache]: Analyzing trace with hash -705195920, now seen corresponding path program 231 times [2021-06-12 18:53:36,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:36,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935083695] [2021-06-12 18:53:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:36,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:36,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935083695] [2021-06-12 18:53:36,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935083695] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:36,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:36,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:36,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668857632] [2021-06-12 18:53:36,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:36,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:36,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:36,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:36,418 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) [2021-06-12 18:53:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:36,578 INFO L93 Difference]: Finished difference Result 1480 states and 4066 transitions. [2021-06-12 18:53:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:36,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:36,580 INFO L225 Difference]: With dead ends: 1480 [2021-06-12 18:53:36,580 INFO L226 Difference]: Without dead ends: 1392 [2021-06-12 18:53:36,581 INFO L728 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 [2021-06-12 18:53:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-06-12 18:53:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1290. [2021-06-12 18:53:36,592 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) [2021-06-12 18:53:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3585 transitions. [2021-06-12 18:53:36,593 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3585 transitions. Word has length 26 [2021-06-12 18:53:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:36,594 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3585 transitions. [2021-06-12 18:53:36,594 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) [2021-06-12 18:53:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3585 transitions. [2021-06-12 18:53:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:36,595 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:36,595 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:36,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-12 18:53:36,595 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:36,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1417263762, now seen corresponding path program 232 times [2021-06-12 18:53:36,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:36,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998494684] [2021-06-12 18:53:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:36,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:36,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998494684] [2021-06-12 18:53:36,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998494684] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:36,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:36,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:36,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697362507] [2021-06-12 18:53:36,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:36,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:36,653 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) [2021-06-12 18:53:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:36,815 INFO L93 Difference]: Finished difference Result 1427 states and 3933 transitions. [2021-06-12 18:53:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:36,815 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 [2021-06-12 18:53:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:36,817 INFO L225 Difference]: With dead ends: 1427 [2021-06-12 18:53:36,817 INFO L226 Difference]: Without dead ends: 1341 [2021-06-12 18:53:36,817 INFO L728 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 [2021-06-12 18:53:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-12 18:53:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1293. [2021-06-12 18:53:36,828 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) [2021-06-12 18:53:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3590 transitions. [2021-06-12 18:53:36,830 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3590 transitions. Word has length 26 [2021-06-12 18:53:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:36,830 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3590 transitions. [2021-06-12 18:53:36,830 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) [2021-06-12 18:53:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3590 transitions. [2021-06-12 18:53:36,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:36,831 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:36,831 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:36,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-12 18:53:36,831 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:36,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:36,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1507023412, now seen corresponding path program 233 times [2021-06-12 18:53:36,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:36,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398094495] [2021-06-12 18:53:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:36,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:36,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398094495] [2021-06-12 18:53:36,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398094495] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:36,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:36,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:36,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454074836] [2021-06-12 18:53:36,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:36,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:36,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:36,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:36,900 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) [2021-06-12 18:53:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:37,074 INFO L93 Difference]: Finished difference Result 1430 states and 3930 transitions. [2021-06-12 18:53:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:37,074 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:37,076 INFO L225 Difference]: With dead ends: 1430 [2021-06-12 18:53:37,076 INFO L226 Difference]: Without dead ends: 1298 [2021-06-12 18:53:37,076 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-06-12 18:53:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1201. [2021-06-12 18:53:37,086 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) [2021-06-12 18:53:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3351 transitions. [2021-06-12 18:53:37,088 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3351 transitions. Word has length 26 [2021-06-12 18:53:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:37,088 INFO L482 AbstractCegarLoop]: Abstraction has 1201 states and 3351 transitions. [2021-06-12 18:53:37,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:37,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3351 transitions. [2021-06-12 18:53:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:37,089 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:37,089 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:37,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-12 18:53:37,089 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:37,089 INFO L82 PathProgramCache]: Analyzing trace with hash -87761518, now seen corresponding path program 234 times [2021-06-12 18:53:37,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:37,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179850334] [2021-06-12 18:53:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:37,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:37,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179850334] [2021-06-12 18:53:37,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179850334] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:37,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:37,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:37,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392271620] [2021-06-12 18:53:37,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:37,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:37,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:37,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:37,142 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) [2021-06-12 18:53:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:37,263 INFO L93 Difference]: Finished difference Result 1516 states and 4163 transitions. [2021-06-12 18:53:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:37,263 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 [2021-06-12 18:53:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:37,265 INFO L225 Difference]: With dead ends: 1516 [2021-06-12 18:53:37,265 INFO L226 Difference]: Without dead ends: 1341 [2021-06-12 18:53:37,265 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:37,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-12 18:53:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1275. [2021-06-12 18:53:37,276 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) [2021-06-12 18:53:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3530 transitions. [2021-06-12 18:53:37,277 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3530 transitions. Word has length 26 [2021-06-12 18:53:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:37,278 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3530 transitions. [2021-06-12 18:53:37,278 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) [2021-06-12 18:53:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3530 transitions. [2021-06-12 18:53:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:37,279 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:37,279 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:37,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-12 18:53:37,279 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:37,279 INFO L82 PathProgramCache]: Analyzing trace with hash -947346512, now seen corresponding path program 235 times [2021-06-12 18:53:37,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:37,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371939914] [2021-06-12 18:53:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:37,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:37,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371939914] [2021-06-12 18:53:37,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371939914] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:37,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:37,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:37,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772699641] [2021-06-12 18:53:37,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:37,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:37,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:37,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:37,335 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) [2021-06-12 18:53:37,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:37,497 INFO L93 Difference]: Finished difference Result 1474 states and 4020 transitions. [2021-06-12 18:53:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:37,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:37,498 INFO L225 Difference]: With dead ends: 1474 [2021-06-12 18:53:37,498 INFO L226 Difference]: Without dead ends: 1337 [2021-06-12 18:53:37,499 INFO L728 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 [2021-06-12 18:53:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-06-12 18:53:37,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1249. [2021-06-12 18:53:37,509 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) [2021-06-12 18:53:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3456 transitions. [2021-06-12 18:53:37,511 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3456 transitions. Word has length 26 [2021-06-12 18:53:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:37,511 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3456 transitions. [2021-06-12 18:53:37,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3456 transitions. [2021-06-12 18:53:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:37,512 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:37,512 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:37,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-12 18:53:37,512 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1849816364, now seen corresponding path program 236 times [2021-06-12 18:53:37,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:37,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176173445] [2021-06-12 18:53:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:37,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:37,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176173445] [2021-06-12 18:53:37,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176173445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:37,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:37,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:37,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121919562] [2021-06-12 18:53:37,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:37,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:37,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:37,564 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) [2021-06-12 18:53:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:37,711 INFO L93 Difference]: Finished difference Result 1527 states and 4192 transitions. [2021-06-12 18:53:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:37,711 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 [2021-06-12 18:53:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:37,713 INFO L225 Difference]: With dead ends: 1527 [2021-06-12 18:53:37,713 INFO L226 Difference]: Without dead ends: 1416 [2021-06-12 18:53:37,713 INFO L728 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 [2021-06-12 18:53:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-12 18:53:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1255. [2021-06-12 18:53:37,725 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) [2021-06-12 18:53:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3466 transitions. [2021-06-12 18:53:37,726 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3466 transitions. Word has length 26 [2021-06-12 18:53:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:37,727 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3466 transitions. [2021-06-12 18:53:37,727 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) [2021-06-12 18:53:37,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3466 transitions. [2021-06-12 18:53:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:37,728 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:37,728 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:37,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-12 18:53:37,728 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:37,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1536899796, now seen corresponding path program 237 times [2021-06-12 18:53:37,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:37,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312142322] [2021-06-12 18:53:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:37,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:37,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312142322] [2021-06-12 18:53:37,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312142322] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:37,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:37,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:37,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94140117] [2021-06-12 18:53:37,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:37,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:37,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:37,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:37,787 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) [2021-06-12 18:53:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:37,947 INFO L93 Difference]: Finished difference Result 1417 states and 3868 transitions. [2021-06-12 18:53:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:37,949 INFO L225 Difference]: With dead ends: 1417 [2021-06-12 18:53:37,949 INFO L226 Difference]: Without dead ends: 1324 [2021-06-12 18:53:37,949 INFO L728 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 [2021-06-12 18:53:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-06-12 18:53:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1258. [2021-06-12 18:53:37,960 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) [2021-06-12 18:53:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3477 transitions. [2021-06-12 18:53:37,961 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3477 transitions. Word has length 26 [2021-06-12 18:53:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:37,962 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3477 transitions. [2021-06-12 18:53:37,962 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) [2021-06-12 18:53:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3477 transitions. [2021-06-12 18:53:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:37,963 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:37,963 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:37,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-12 18:53:37,963 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1888622892, now seen corresponding path program 238 times [2021-06-12 18:53:37,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:37,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894165598] [2021-06-12 18:53:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:38,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:38,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894165598] [2021-06-12 18:53:38,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894165598] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:38,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:38,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:38,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024997568] [2021-06-12 18:53:38,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:38,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:38,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:38,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:38,021 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) [2021-06-12 18:53:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:38,179 INFO L93 Difference]: Finished difference Result 1452 states and 3941 transitions. [2021-06-12 18:53:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:38,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:38,181 INFO L225 Difference]: With dead ends: 1452 [2021-06-12 18:53:38,181 INFO L226 Difference]: Without dead ends: 1334 [2021-06-12 18:53:38,182 INFO L728 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 [2021-06-12 18:53:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-12 18:53:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1252. [2021-06-12 18:53:38,192 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) [2021-06-12 18:53:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3449 transitions. [2021-06-12 18:53:38,194 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3449 transitions. Word has length 26 [2021-06-12 18:53:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:38,194 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3449 transitions. [2021-06-12 18:53:38,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3449 transitions. [2021-06-12 18:53:38,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:38,195 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:38,195 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:38,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-12 18:53:38,195 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:38,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1837491534, now seen corresponding path program 239 times [2021-06-12 18:53:38,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:38,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558781394] [2021-06-12 18:53:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:38,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:38,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558781394] [2021-06-12 18:53:38,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558781394] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:38,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:38,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:38,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418735586] [2021-06-12 18:53:38,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:38,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:38,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:38,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:38,260 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) [2021-06-12 18:53:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:38,422 INFO L93 Difference]: Finished difference Result 1528 states and 4182 transitions. [2021-06-12 18:53:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:38,422 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 [2021-06-12 18:53:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:38,424 INFO L225 Difference]: With dead ends: 1528 [2021-06-12 18:53:38,424 INFO L226 Difference]: Without dead ends: 1420 [2021-06-12 18:53:38,424 INFO L728 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 [2021-06-12 18:53:38,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-06-12 18:53:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1249. [2021-06-12 18:53:38,435 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) [2021-06-12 18:53:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3441 transitions. [2021-06-12 18:53:38,437 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3441 transitions. Word has length 26 [2021-06-12 18:53:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:38,437 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3441 transitions. [2021-06-12 18:53:38,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3441 transitions. [2021-06-12 18:53:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:38,438 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:38,438 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:38,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-12 18:53:38,438 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:38,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1609385358, now seen corresponding path program 240 times [2021-06-12 18:53:38,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:38,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183747550] [2021-06-12 18:53:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:38,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:38,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183747550] [2021-06-12 18:53:38,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183747550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:38,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:38,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:38,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396473162] [2021-06-12 18:53:38,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:38,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:38,488 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) [2021-06-12 18:53:38,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:38,611 INFO L93 Difference]: Finished difference Result 1511 states and 4128 transitions. [2021-06-12 18:53:38,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:38,612 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 [2021-06-12 18:53:38,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:38,613 INFO L225 Difference]: With dead ends: 1511 [2021-06-12 18:53:38,613 INFO L226 Difference]: Without dead ends: 1418 [2021-06-12 18:53:38,613 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-06-12 18:53:38,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1275. [2021-06-12 18:53:38,625 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) [2021-06-12 18:53:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3517 transitions. [2021-06-12 18:53:38,626 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3517 transitions. Word has length 26 [2021-06-12 18:53:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:38,626 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3517 transitions. [2021-06-12 18:53:38,626 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) [2021-06-12 18:53:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3517 transitions. [2021-06-12 18:53:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:38,628 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:38,628 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:38,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-12 18:53:38,628 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1816137330, now seen corresponding path program 241 times [2021-06-12 18:53:38,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:38,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968113681] [2021-06-12 18:53:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:38,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:38,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968113681] [2021-06-12 18:53:38,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968113681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:38,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:38,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:38,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173012318] [2021-06-12 18:53:38,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:38,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:38,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:38,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:38,685 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) [2021-06-12 18:53:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:38,839 INFO L93 Difference]: Finished difference Result 1582 states and 4293 transitions. [2021-06-12 18:53:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:38,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:38,841 INFO L225 Difference]: With dead ends: 1582 [2021-06-12 18:53:38,841 INFO L226 Difference]: Without dead ends: 1369 [2021-06-12 18:53:38,841 INFO L728 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 [2021-06-12 18:53:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-06-12 18:53:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1275. [2021-06-12 18:53:38,854 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) [2021-06-12 18:53:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3491 transitions. [2021-06-12 18:53:38,855 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3491 transitions. Word has length 26 [2021-06-12 18:53:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:38,855 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3491 transitions. [2021-06-12 18:53:38,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3491 transitions. [2021-06-12 18:53:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:38,857 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:38,857 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:38,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-12 18:53:38,857 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:38,857 INFO L82 PathProgramCache]: Analyzing trace with hash 71966128, now seen corresponding path program 242 times [2021-06-12 18:53:38,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:38,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289677770] [2021-06-12 18:53:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:38,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:38,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289677770] [2021-06-12 18:53:38,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289677770] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:38,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:38,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:38,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470873086] [2021-06-12 18:53:38,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:38,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:38,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:38,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:38,923 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) [2021-06-12 18:53:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:39,083 INFO L93 Difference]: Finished difference Result 1460 states and 3935 transitions. [2021-06-12 18:53:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:39,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:39,084 INFO L225 Difference]: With dead ends: 1460 [2021-06-12 18:53:39,084 INFO L226 Difference]: Without dead ends: 1367 [2021-06-12 18:53:39,085 INFO L728 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 [2021-06-12 18:53:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-06-12 18:53:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1275. [2021-06-12 18:53:39,095 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) [2021-06-12 18:53:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3487 transitions. [2021-06-12 18:53:39,097 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3487 transitions. Word has length 26 [2021-06-12 18:53:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:39,097 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3487 transitions. [2021-06-12 18:53:39,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3487 transitions. [2021-06-12 18:53:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:39,098 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:39,098 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:39,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-12 18:53:39,099 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:39,099 INFO L82 PathProgramCache]: Analyzing trace with hash 941410736, now seen corresponding path program 243 times [2021-06-12 18:53:39,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:39,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409209804] [2021-06-12 18:53:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:39,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:39,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409209804] [2021-06-12 18:53:39,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409209804] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:39,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:39,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:39,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433270380] [2021-06-12 18:53:39,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:39,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:39,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:39,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:39,155 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) [2021-06-12 18:53:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:39,318 INFO L93 Difference]: Finished difference Result 1471 states and 3964 transitions. [2021-06-12 18:53:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:39,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:39,320 INFO L225 Difference]: With dead ends: 1471 [2021-06-12 18:53:39,320 INFO L226 Difference]: Without dead ends: 1362 [2021-06-12 18:53:39,320 INFO L728 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 [2021-06-12 18:53:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-06-12 18:53:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1290. [2021-06-12 18:53:39,336 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) [2021-06-12 18:53:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3523 transitions. [2021-06-12 18:53:39,338 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3523 transitions. Word has length 26 [2021-06-12 18:53:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:39,338 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3523 transitions. [2021-06-12 18:53:39,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3523 transitions. [2021-06-12 18:53:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:39,339 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:39,339 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:39,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-12 18:53:39,339 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:39,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1182487510, now seen corresponding path program 244 times [2021-06-12 18:53:39,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:39,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636099905] [2021-06-12 18:53:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:39,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:39,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636099905] [2021-06-12 18:53:39,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636099905] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:39,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:39,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:39,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066666729] [2021-06-12 18:53:39,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:39,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:39,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:39,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:39,397 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) [2021-06-12 18:53:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:39,555 INFO L93 Difference]: Finished difference Result 1456 states and 3922 transitions. [2021-06-12 18:53:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:39,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:39,557 INFO L225 Difference]: With dead ends: 1456 [2021-06-12 18:53:39,557 INFO L226 Difference]: Without dead ends: 1294 [2021-06-12 18:53:39,558 INFO L728 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 [2021-06-12 18:53:39,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-12 18:53:39,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1245. [2021-06-12 18:53:39,568 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) [2021-06-12 18:53:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3411 transitions. [2021-06-12 18:53:39,570 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3411 transitions. Word has length 26 [2021-06-12 18:53:39,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:39,570 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3411 transitions. [2021-06-12 18:53:39,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:39,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3411 transitions. [2021-06-12 18:53:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:39,571 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:39,571 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:39,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-12 18:53:39,571 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:39,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2078272624, now seen corresponding path program 245 times [2021-06-12 18:53:39,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:39,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005089433] [2021-06-12 18:53:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:39,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:39,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005089433] [2021-06-12 18:53:39,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005089433] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:39,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:39,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:39,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093691498] [2021-06-12 18:53:39,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:39,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:39,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:39,626 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) [2021-06-12 18:53:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:39,769 INFO L93 Difference]: Finished difference Result 1475 states and 3997 transitions. [2021-06-12 18:53:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:39,769 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 [2021-06-12 18:53:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:39,771 INFO L225 Difference]: With dead ends: 1475 [2021-06-12 18:53:39,771 INFO L226 Difference]: Without dead ends: 1320 [2021-06-12 18:53:39,771 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-06-12 18:53:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1284. [2021-06-12 18:53:39,782 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) [2021-06-12 18:53:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3492 transitions. [2021-06-12 18:53:39,784 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3492 transitions. Word has length 26 [2021-06-12 18:53:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:39,784 INFO L482 AbstractCegarLoop]: Abstraction has 1284 states and 3492 transitions. [2021-06-12 18:53:39,784 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) [2021-06-12 18:53:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3492 transitions. [2021-06-12 18:53:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:39,785 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:39,785 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:39,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-12 18:53:39,785 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:39,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:39,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1357109678, now seen corresponding path program 246 times [2021-06-12 18:53:39,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:39,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203546898] [2021-06-12 18:53:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:39,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:39,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203546898] [2021-06-12 18:53:39,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203546898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:39,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:39,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:39,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916654213] [2021-06-12 18:53:39,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:39,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:39,849 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) [2021-06-12 18:53:40,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:40,011 INFO L93 Difference]: Finished difference Result 1451 states and 3899 transitions. [2021-06-12 18:53:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:40,011 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 [2021-06-12 18:53:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:40,013 INFO L225 Difference]: With dead ends: 1451 [2021-06-12 18:53:40,013 INFO L226 Difference]: Without dead ends: 1310 [2021-06-12 18:53:40,013 INFO L728 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 [2021-06-12 18:53:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-12 18:53:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1258. [2021-06-12 18:53:40,024 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) [2021-06-12 18:53:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3420 transitions. [2021-06-12 18:53:40,025 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3420 transitions. Word has length 26 [2021-06-12 18:53:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:40,025 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3420 transitions. [2021-06-12 18:53:40,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3420 transitions. [2021-06-12 18:53:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:40,026 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:40,027 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:40,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-12 18:53:40,027 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:40,027 INFO L82 PathProgramCache]: Analyzing trace with hash 234837774, now seen corresponding path program 247 times [2021-06-12 18:53:40,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:40,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887730552] [2021-06-12 18:53:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:40,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:40,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887730552] [2021-06-12 18:53:40,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887730552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:40,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:40,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:40,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224492369] [2021-06-12 18:53:40,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:40,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:40,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:40,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:40,084 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) [2021-06-12 18:53:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:40,243 INFO L93 Difference]: Finished difference Result 1416 states and 3802 transitions. [2021-06-12 18:53:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:40,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:40,245 INFO L225 Difference]: With dead ends: 1416 [2021-06-12 18:53:40,245 INFO L226 Difference]: Without dead ends: 1335 [2021-06-12 18:53:40,245 INFO L728 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 [2021-06-12 18:53:40,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-06-12 18:53:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1260. [2021-06-12 18:53:40,261 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) [2021-06-12 18:53:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3427 transitions. [2021-06-12 18:53:40,262 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3427 transitions. Word has length 26 [2021-06-12 18:53:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:40,262 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3427 transitions. [2021-06-12 18:53:40,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3427 transitions. [2021-06-12 18:53:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:40,264 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:40,264 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:40,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-12 18:53:40,264 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:40,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1104282382, now seen corresponding path program 248 times [2021-06-12 18:53:40,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:40,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025550586] [2021-06-12 18:53:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:40,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:40,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025550586] [2021-06-12 18:53:40,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025550586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:40,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:40,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:40,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436012190] [2021-06-12 18:53:40,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:40,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:40,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:40,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:40,323 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) [2021-06-12 18:53:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:40,482 INFO L93 Difference]: Finished difference Result 1422 states and 3809 transitions. [2021-06-12 18:53:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:40,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:40,484 INFO L225 Difference]: With dead ends: 1422 [2021-06-12 18:53:40,484 INFO L226 Difference]: Without dead ends: 1302 [2021-06-12 18:53:40,485 INFO L728 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 [2021-06-12 18:53:40,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-06-12 18:53:40,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1256. [2021-06-12 18:53:40,495 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) [2021-06-12 18:53:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3414 transitions. [2021-06-12 18:53:40,497 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3414 transitions. Word has length 26 [2021-06-12 18:53:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:40,497 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3414 transitions. [2021-06-12 18:53:40,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3414 transitions. [2021-06-12 18:53:40,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:40,498 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:40,498 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:40,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-12 18:53:40,498 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:40,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:40,499 INFO L82 PathProgramCache]: Analyzing trace with hash -364428848, now seen corresponding path program 249 times [2021-06-12 18:53:40,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:40,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847506374] [2021-06-12 18:53:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:40,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:40,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847506374] [2021-06-12 18:53:40,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847506374] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:40,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:40,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:40,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204037700] [2021-06-12 18:53:40,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:40,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:40,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:40,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:40,558 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) [2021-06-12 18:53:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:40,719 INFO L93 Difference]: Finished difference Result 1383 states and 3716 transitions. [2021-06-12 18:53:40,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:40,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:40,721 INFO L225 Difference]: With dead ends: 1383 [2021-06-12 18:53:40,721 INFO L226 Difference]: Without dead ends: 1292 [2021-06-12 18:53:40,721 INFO L728 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 [2021-06-12 18:53:40,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-12 18:53:40,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-06-12 18:53:40,732 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) [2021-06-12 18:53:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3391 transitions. [2021-06-12 18:53:40,733 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3391 transitions. Word has length 26 [2021-06-12 18:53:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:40,733 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3391 transitions. [2021-06-12 18:53:40,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3391 transitions. [2021-06-12 18:53:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:40,734 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:40,735 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:40,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-12 18:53:40,735 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1042734962, now seen corresponding path program 250 times [2021-06-12 18:53:40,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:40,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85792001] [2021-06-12 18:53:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:40,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:40,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85792001] [2021-06-12 18:53:40,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85792001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:40,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:40,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:40,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400817019] [2021-06-12 18:53:40,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:40,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:40,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:40,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:40,790 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) [2021-06-12 18:53:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:40,914 INFO L93 Difference]: Finished difference Result 1483 states and 4005 transitions. [2021-06-12 18:53:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:40,915 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 [2021-06-12 18:53:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:40,916 INFO L225 Difference]: With dead ends: 1483 [2021-06-12 18:53:40,916 INFO L226 Difference]: Without dead ends: 1331 [2021-06-12 18:53:40,916 INFO L728 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 [2021-06-12 18:53:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-06-12 18:53:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1273. [2021-06-12 18:53:40,927 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) [2021-06-12 18:53:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3449 transitions. [2021-06-12 18:53:40,929 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3449 transitions. Word has length 26 [2021-06-12 18:53:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:40,929 INFO L482 AbstractCegarLoop]: Abstraction has 1273 states and 3449 transitions. [2021-06-12 18:53:40,929 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) [2021-06-12 18:53:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3449 transitions. [2021-06-12 18:53:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:40,930 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:40,930 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:40,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-12 18:53:40,930 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:40,930 INFO L82 PathProgramCache]: Analyzing trace with hash 183149968, now seen corresponding path program 251 times [2021-06-12 18:53:40,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:40,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886578842] [2021-06-12 18:53:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:40,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:40,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886578842] [2021-06-12 18:53:40,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886578842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:40,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:40,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:40,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022567059] [2021-06-12 18:53:40,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:40,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:40,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:40,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:40,994 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) [2021-06-12 18:53:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:41,151 INFO L93 Difference]: Finished difference Result 1455 states and 3899 transitions. [2021-06-12 18:53:41,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:41,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:41,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:41,153 INFO L225 Difference]: With dead ends: 1455 [2021-06-12 18:53:41,153 INFO L226 Difference]: Without dead ends: 1330 [2021-06-12 18:53:41,153 INFO L728 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 [2021-06-12 18:53:41,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-12 18:53:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1247. [2021-06-12 18:53:41,183 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) [2021-06-12 18:53:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3387 transitions. [2021-06-12 18:53:41,185 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3387 transitions. Word has length 26 [2021-06-12 18:53:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:41,185 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3387 transitions. [2021-06-12 18:53:41,185 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) [2021-06-12 18:53:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3387 transitions. [2021-06-12 18:53:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:41,186 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:41,186 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:41,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-12 18:53:41,186 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:41,186 INFO L82 PathProgramCache]: Analyzing trace with hash 824926418, now seen corresponding path program 252 times [2021-06-12 18:53:41,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:41,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392052373] [2021-06-12 18:53:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:41,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:41,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392052373] [2021-06-12 18:53:41,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392052373] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:41,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:41,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:41,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580626203] [2021-06-12 18:53:41,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:41,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:41,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:41,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:41,243 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) [2021-06-12 18:53:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:41,420 INFO L93 Difference]: Finished difference Result 1414 states and 3792 transitions. [2021-06-12 18:53:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:41,420 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 [2021-06-12 18:53:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:41,422 INFO L225 Difference]: With dead ends: 1414 [2021-06-12 18:53:41,422 INFO L226 Difference]: Without dead ends: 1315 [2021-06-12 18:53:41,422 INFO L728 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 [2021-06-12 18:53:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-06-12 18:53:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1253. [2021-06-12 18:53:41,433 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) [2021-06-12 18:53:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-06-12 18:53:41,434 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-06-12 18:53:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:41,434 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-06-12 18:53:41,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-06-12 18:53:41,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:41,435 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:41,436 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:41,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-12 18:53:41,436 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:41,436 INFO L82 PathProgramCache]: Analyzing trace with hash -83324718, now seen corresponding path program 253 times [2021-06-12 18:53:41,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:41,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18227838] [2021-06-12 18:53:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:41,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:41,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18227838] [2021-06-12 18:53:41,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18227838] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:41,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:41,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:41,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276512872] [2021-06-12 18:53:41,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:41,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:41,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:41,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:41,494 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) [2021-06-12 18:53:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:41,651 INFO L93 Difference]: Finished difference Result 1410 states and 3784 transitions. [2021-06-12 18:53:41,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:41,651 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 [2021-06-12 18:53:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:41,653 INFO L225 Difference]: With dead ends: 1410 [2021-06-12 18:53:41,653 INFO L226 Difference]: Without dead ends: 1329 [2021-06-12 18:53:41,653 INFO L728 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 [2021-06-12 18:53:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-12 18:53:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1256. [2021-06-12 18:53:41,664 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) [2021-06-12 18:53:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3408 transitions. [2021-06-12 18:53:41,666 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3408 transitions. Word has length 26 [2021-06-12 18:53:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:41,666 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3408 transitions. [2021-06-12 18:53:41,666 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) [2021-06-12 18:53:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3408 transitions. [2021-06-12 18:53:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:41,667 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:41,667 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:41,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-12 18:53:41,667 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:41,668 INFO L82 PathProgramCache]: Analyzing trace with hash 786119890, now seen corresponding path program 254 times [2021-06-12 18:53:41,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:41,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193887161] [2021-06-12 18:53:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:41,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:41,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193887161] [2021-06-12 18:53:41,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193887161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:41,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:41,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:41,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331804324] [2021-06-12 18:53:41,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:41,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:41,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:41,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:41,726 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) [2021-06-12 18:53:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:41,891 INFO L93 Difference]: Finished difference Result 1435 states and 3835 transitions. [2021-06-12 18:53:41,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:41,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:41,894 INFO L225 Difference]: With dead ends: 1435 [2021-06-12 18:53:41,894 INFO L226 Difference]: Without dead ends: 1329 [2021-06-12 18:53:41,894 INFO L728 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 [2021-06-12 18:53:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-12 18:53:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1253. [2021-06-12 18:53:41,905 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) [2021-06-12 18:53:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-06-12 18:53:41,907 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-06-12 18:53:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:41,907 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-06-12 18:53:41,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-06-12 18:53:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:41,908 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:41,909 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:41,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-12 18:53:41,909 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:41,909 INFO L82 PathProgramCache]: Analyzing trace with hash 837251248, now seen corresponding path program 255 times [2021-06-12 18:53:41,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:41,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489459442] [2021-06-12 18:53:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:41,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:41,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489459442] [2021-06-12 18:53:41,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489459442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:41,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:41,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:41,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258001374] [2021-06-12 18:53:41,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:41,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:41,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:41,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:41,971 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) [2021-06-12 18:53:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:42,128 INFO L93 Difference]: Finished difference Result 1387 states and 3720 transitions. [2021-06-12 18:53:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:42,130 INFO L225 Difference]: With dead ends: 1387 [2021-06-12 18:53:42,130 INFO L226 Difference]: Without dead ends: 1291 [2021-06-12 18:53:42,130 INFO L728 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 [2021-06-12 18:53:42,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-06-12 18:53:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1238. [2021-06-12 18:53:42,145 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) [2021-06-12 18:53:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3364 transitions. [2021-06-12 18:53:42,147 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3364 transitions. Word has length 26 [2021-06-12 18:53:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:42,147 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3364 transitions. [2021-06-12 18:53:42,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3364 transitions. [2021-06-12 18:53:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:42,148 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:42,148 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:42,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-12 18:53:42,148 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:42,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:42,149 INFO L82 PathProgramCache]: Analyzing trace with hash 328314028, now seen corresponding path program 256 times [2021-06-12 18:53:42,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:42,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137867090] [2021-06-12 18:53:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:42,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:42,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137867090] [2021-06-12 18:53:42,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137867090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:42,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:42,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:42,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973518356] [2021-06-12 18:53:42,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:42,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:42,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:42,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:42,217 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) [2021-06-12 18:53:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:42,346 INFO L93 Difference]: Finished difference Result 1442 states and 3911 transitions. [2021-06-12 18:53:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:42,346 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 [2021-06-12 18:53:42,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:42,348 INFO L225 Difference]: With dead ends: 1442 [2021-06-12 18:53:42,348 INFO L226 Difference]: Without dead ends: 1357 [2021-06-12 18:53:42,348 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-06-12 18:53:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1252. [2021-06-12 18:53:42,359 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) [2021-06-12 18:53:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3402 transitions. [2021-06-12 18:53:42,361 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3402 transitions. Word has length 26 [2021-06-12 18:53:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:42,361 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3402 transitions. [2021-06-12 18:53:42,361 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) [2021-06-12 18:53:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3402 transitions. [2021-06-12 18:53:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:42,362 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:42,362 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:42,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-12 18:53:42,362 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:42,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1240614514, now seen corresponding path program 257 times [2021-06-12 18:53:42,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:42,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357956329] [2021-06-12 18:53:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:42,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:42,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357956329] [2021-06-12 18:53:42,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357956329] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:42,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:42,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:42,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569155593] [2021-06-12 18:53:42,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:42,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:42,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:42,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:42,413 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) [2021-06-12 18:53:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:42,546 INFO L93 Difference]: Finished difference Result 1475 states and 4004 transitions. [2021-06-12 18:53:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:42,546 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 [2021-06-12 18:53:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:42,548 INFO L225 Difference]: With dead ends: 1475 [2021-06-12 18:53:42,548 INFO L226 Difference]: Without dead ends: 1382 [2021-06-12 18:53:42,548 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-12 18:53:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1238. [2021-06-12 18:53:42,559 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) [2021-06-12 18:53:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3362 transitions. [2021-06-12 18:53:42,561 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3362 transitions. Word has length 26 [2021-06-12 18:53:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:42,561 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3362 transitions. [2021-06-12 18:53:42,561 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) [2021-06-12 18:53:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3362 transitions. [2021-06-12 18:53:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:42,562 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:42,562 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:42,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-12 18:53:42,562 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:42,563 INFO L82 PathProgramCache]: Analyzing trace with hash -986929394, now seen corresponding path program 258 times [2021-06-12 18:53:42,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:42,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490641150] [2021-06-12 18:53:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:42,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:42,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490641150] [2021-06-12 18:53:42,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490641150] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:42,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:42,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:42,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597156907] [2021-06-12 18:53:42,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:42,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:42,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:42,621 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) [2021-06-12 18:53:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:42,783 INFO L93 Difference]: Finished difference Result 1375 states and 3707 transitions. [2021-06-12 18:53:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:42,785 INFO L225 Difference]: With dead ends: 1375 [2021-06-12 18:53:42,785 INFO L226 Difference]: Without dead ends: 1294 [2021-06-12 18:53:42,785 INFO L728 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 [2021-06-12 18:53:42,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-12 18:53:42,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1242. [2021-06-12 18:53:42,796 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) [2021-06-12 18:53:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3377 transitions. [2021-06-12 18:53:42,797 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3377 transitions. Word has length 26 [2021-06-12 18:53:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:42,797 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3377 transitions. [2021-06-12 18:53:42,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3377 transitions. [2021-06-12 18:53:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:42,798 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:42,798 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:42,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-12 18:53:42,799 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash -117484786, now seen corresponding path program 259 times [2021-06-12 18:53:42,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:42,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355949070] [2021-06-12 18:53:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:42,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:42,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355949070] [2021-06-12 18:53:42,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355949070] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:42,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:42,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:42,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609797165] [2021-06-12 18:53:42,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:42,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:42,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:42,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:42,857 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) [2021-06-12 18:53:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:43,017 INFO L93 Difference]: Finished difference Result 1385 states and 3725 transitions. [2021-06-12 18:53:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:43,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:43,019 INFO L225 Difference]: With dead ends: 1385 [2021-06-12 18:53:43,019 INFO L226 Difference]: Without dead ends: 1288 [2021-06-12 18:53:43,019 INFO L728 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 [2021-06-12 18:53:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-06-12 18:53:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1243. [2021-06-12 18:53:43,029 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) [2021-06-12 18:53:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3379 transitions. [2021-06-12 18:53:43,031 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3379 transitions. Word has length 26 [2021-06-12 18:53:43,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:43,031 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3379 transitions. [2021-06-12 18:53:43,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3379 transitions. [2021-06-12 18:53:43,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:43,032 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:43,032 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:43,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-12 18:53:43,032 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:43,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1586196016, now seen corresponding path program 260 times [2021-06-12 18:53:43,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:43,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923059644] [2021-06-12 18:53:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:43,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:43,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923059644] [2021-06-12 18:53:43,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923059644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:43,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:43,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:43,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131308841] [2021-06-12 18:53:43,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:43,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:43,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:43,100 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) [2021-06-12 18:53:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:43,261 INFO L93 Difference]: Finished difference Result 1363 states and 3672 transitions. [2021-06-12 18:53:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:43,262 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:43,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:43,263 INFO L225 Difference]: With dead ends: 1363 [2021-06-12 18:53:43,263 INFO L226 Difference]: Without dead ends: 1274 [2021-06-12 18:53:43,263 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-06-12 18:53:43,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1247. [2021-06-12 18:53:43,273 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) [2021-06-12 18:53:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3390 transitions. [2021-06-12 18:53:43,275 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3390 transitions. Word has length 26 [2021-06-12 18:53:43,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:43,275 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3390 transitions. [2021-06-12 18:53:43,275 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) [2021-06-12 18:53:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3390 transitions. [2021-06-12 18:53:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:43,276 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:43,276 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:43,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-12 18:53:43,276 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:43,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:43,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1573042444, now seen corresponding path program 261 times [2021-06-12 18:53:43,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:43,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965595806] [2021-06-12 18:53:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:43,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:43,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965595806] [2021-06-12 18:53:43,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965595806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:43,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:43,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:43,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933822047] [2021-06-12 18:53:43,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:43,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:43,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:43,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:43,334 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) [2021-06-12 18:53:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:43,494 INFO L93 Difference]: Finished difference Result 1378 states and 3704 transitions. [2021-06-12 18:53:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:43,494 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 [2021-06-12 18:53:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:43,495 INFO L225 Difference]: With dead ends: 1378 [2021-06-12 18:53:43,495 INFO L226 Difference]: Without dead ends: 1269 [2021-06-12 18:53:43,496 INFO L728 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 [2021-06-12 18:53:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-06-12 18:53:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1243. [2021-06-12 18:53:43,506 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) [2021-06-12 18:53:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3376 transitions. [2021-06-12 18:53:43,507 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3376 transitions. Word has length 26 [2021-06-12 18:53:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:43,507 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3376 transitions. [2021-06-12 18:53:43,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3376 transitions. [2021-06-12 18:53:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:43,508 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:43,509 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:43,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-12 18:53:43,509 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:43,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1193737360, now seen corresponding path program 262 times [2021-06-12 18:53:43,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:43,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567882424] [2021-06-12 18:53:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:43,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:43,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567882424] [2021-06-12 18:53:43,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567882424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:43,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:43,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:43,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30025718] [2021-06-12 18:53:43,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:43,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:43,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:43,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:43,567 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) [2021-06-12 18:53:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:43,729 INFO L93 Difference]: Finished difference Result 1384 states and 3725 transitions. [2021-06-12 18:53:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:43,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:43,731 INFO L225 Difference]: With dead ends: 1384 [2021-06-12 18:53:43,731 INFO L226 Difference]: Without dead ends: 1303 [2021-06-12 18:53:43,731 INFO L728 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 [2021-06-12 18:53:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-06-12 18:53:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1245. [2021-06-12 18:53:43,741 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) [2021-06-12 18:53:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3383 transitions. [2021-06-12 18:53:43,743 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3383 transitions. Word has length 26 [2021-06-12 18:53:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:43,743 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3383 transitions. [2021-06-12 18:53:43,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3383 transitions. [2021-06-12 18:53:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:43,744 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:43,744 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:43,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-12 18:53:43,744 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:43,745 INFO L82 PathProgramCache]: Analyzing trace with hash -324292752, now seen corresponding path program 263 times [2021-06-12 18:53:43,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:43,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522683485] [2021-06-12 18:53:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:43,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:43,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522683485] [2021-06-12 18:53:43,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522683485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:43,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:43,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:43,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668946653] [2021-06-12 18:53:43,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:43,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:43,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:43,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:43,807 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) [2021-06-12 18:53:43,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:43,968 INFO L93 Difference]: Finished difference Result 1389 states and 3727 transitions. [2021-06-12 18:53:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:43,968 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:43,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:43,970 INFO L225 Difference]: With dead ends: 1389 [2021-06-12 18:53:43,970 INFO L226 Difference]: Without dead ends: 1292 [2021-06-12 18:53:43,970 INFO L728 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 [2021-06-12 18:53:43,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-12 18:53:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1241. [2021-06-12 18:53:43,987 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) [2021-06-12 18:53:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 3368 transitions. [2021-06-12 18:53:43,988 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 3368 transitions. Word has length 26 [2021-06-12 18:53:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:43,988 INFO L482 AbstractCegarLoop]: Abstraction has 1241 states and 3368 transitions. [2021-06-12 18:53:43,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 3368 transitions. [2021-06-12 18:53:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:43,989 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:43,989 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:43,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-12 18:53:43,990 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:43,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1596391118, now seen corresponding path program 264 times [2021-06-12 18:53:43,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:43,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119007579] [2021-06-12 18:53:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:44,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:44,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119007579] [2021-06-12 18:53:44,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119007579] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:44,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:44,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:44,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821145553] [2021-06-12 18:53:44,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:44,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:44,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:44,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:44,050 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) [2021-06-12 18:53:44,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:44,214 INFO L93 Difference]: Finished difference Result 1366 states and 3673 transitions. [2021-06-12 18:53:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:44,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:44,216 INFO L225 Difference]: With dead ends: 1366 [2021-06-12 18:53:44,216 INFO L226 Difference]: Without dead ends: 1279 [2021-06-12 18:53:44,216 INFO L728 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 [2021-06-12 18:53:44,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-06-12 18:53:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1242. [2021-06-12 18:53:44,227 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) [2021-06-12 18:53:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3369 transitions. [2021-06-12 18:53:44,228 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3369 transitions. Word has length 26 [2021-06-12 18:53:44,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:44,228 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3369 transitions. [2021-06-12 18:53:44,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:44,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3369 transitions. [2021-06-12 18:53:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:44,230 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:44,230 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:44,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-12 18:53:44,230 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:44,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:44,230 INFO L82 PathProgramCache]: Analyzing trace with hash -578638486, now seen corresponding path program 265 times [2021-06-12 18:53:44,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:44,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340562543] [2021-06-12 18:53:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:44,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:44,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340562543] [2021-06-12 18:53:44,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340562543] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:44,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:44,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:44,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748276509] [2021-06-12 18:53:44,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:44,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:44,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:44,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:44,294 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) [2021-06-12 18:53:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:44,455 INFO L93 Difference]: Finished difference Result 1386 states and 3719 transitions. [2021-06-12 18:53:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:44,456 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:44,457 INFO L225 Difference]: With dead ends: 1386 [2021-06-12 18:53:44,457 INFO L226 Difference]: Without dead ends: 1281 [2021-06-12 18:53:44,457 INFO L728 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 [2021-06-12 18:53:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-12 18:53:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1236. [2021-06-12 18:53:44,468 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) [2021-06-12 18:53:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3354 transitions. [2021-06-12 18:53:44,469 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3354 transitions. Word has length 26 [2021-06-12 18:53:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:44,469 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3354 transitions. [2021-06-12 18:53:44,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3354 transitions. [2021-06-12 18:53:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:44,470 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:44,470 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:44,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-12 18:53:44,471 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:44,471 INFO L82 PathProgramCache]: Analyzing trace with hash -73777870, now seen corresponding path program 266 times [2021-06-12 18:53:44,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:44,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650967557] [2021-06-12 18:53:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:44,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:44,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650967557] [2021-06-12 18:53:44,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650967557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:44,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:44,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:44,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934511575] [2021-06-12 18:53:44,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:44,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:44,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:44,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:44,528 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) [2021-06-12 18:53:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:44,687 INFO L93 Difference]: Finished difference Result 1442 states and 3908 transitions. [2021-06-12 18:53:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:44,688 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 [2021-06-12 18:53:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:44,689 INFO L225 Difference]: With dead ends: 1442 [2021-06-12 18:53:44,689 INFO L226 Difference]: Without dead ends: 1351 [2021-06-12 18:53:44,689 INFO L728 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 [2021-06-12 18:53:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-06-12 18:53:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1238. [2021-06-12 18:53:44,700 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) [2021-06-12 18:53:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3356 transitions. [2021-06-12 18:53:44,701 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3356 transitions. Word has length 26 [2021-06-12 18:53:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:44,701 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3356 transitions. [2021-06-12 18:53:44,701 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) [2021-06-12 18:53:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3356 transitions. [2021-06-12 18:53:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:44,703 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:44,703 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:44,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-12 18:53:44,703 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1465922416, now seen corresponding path program 267 times [2021-06-12 18:53:44,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:44,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803662023] [2021-06-12 18:53:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:44,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:44,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803662023] [2021-06-12 18:53:44,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803662023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:44,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:44,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:44,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091206838] [2021-06-12 18:53:44,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:44,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:44,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:44,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:44,761 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) [2021-06-12 18:53:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:44,921 INFO L93 Difference]: Finished difference Result 1473 states and 3992 transitions. [2021-06-12 18:53:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:44,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:44,923 INFO L225 Difference]: With dead ends: 1473 [2021-06-12 18:53:44,923 INFO L226 Difference]: Without dead ends: 1381 [2021-06-12 18:53:44,923 INFO L728 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 [2021-06-12 18:53:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-06-12 18:53:44,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1234. [2021-06-12 18:53:44,938 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) [2021-06-12 18:53:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3342 transitions. [2021-06-12 18:53:44,939 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3342 transitions. Word has length 26 [2021-06-12 18:53:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:44,939 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3342 transitions. [2021-06-12 18:53:44,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3342 transitions. [2021-06-12 18:53:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:44,940 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:44,940 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:44,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-12 18:53:44,941 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:44,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:44,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1840935756, now seen corresponding path program 268 times [2021-06-12 18:53:44,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:44,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566996541] [2021-06-12 18:53:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:44,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:44,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566996541] [2021-06-12 18:53:44,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566996541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:44,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:44,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:44,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105244124] [2021-06-12 18:53:44,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:44,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:44,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:44,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:44,998 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) [2021-06-12 18:53:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:45,123 INFO L93 Difference]: Finished difference Result 1450 states and 3914 transitions. [2021-06-12 18:53:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:45,123 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 [2021-06-12 18:53:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:45,125 INFO L225 Difference]: With dead ends: 1450 [2021-06-12 18:53:45,125 INFO L226 Difference]: Without dead ends: 1359 [2021-06-12 18:53:45,125 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-06-12 18:53:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1260. [2021-06-12 18:53:45,136 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) [2021-06-12 18:53:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3414 transitions. [2021-06-12 18:53:45,137 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3414 transitions. Word has length 26 [2021-06-12 18:53:45,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:45,137 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3414 transitions. [2021-06-12 18:53:45,137 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) [2021-06-12 18:53:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3414 transitions. [2021-06-12 18:53:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:45,139 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:45,139 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:45,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-12 18:53:45,139 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:45,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:45,139 INFO L82 PathProgramCache]: Analyzing trace with hash -971491148, now seen corresponding path program 269 times [2021-06-12 18:53:45,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:45,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30112143] [2021-06-12 18:53:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:45,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:45,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30112143] [2021-06-12 18:53:45,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30112143] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:45,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:45,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:45,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399216353] [2021-06-12 18:53:45,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:45,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:45,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:45,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:45,196 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) [2021-06-12 18:53:45,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:45,351 INFO L93 Difference]: Finished difference Result 1501 states and 4029 transitions. [2021-06-12 18:53:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:45,351 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:45,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:45,352 INFO L225 Difference]: With dead ends: 1501 [2021-06-12 18:53:45,352 INFO L226 Difference]: Without dead ends: 1304 [2021-06-12 18:53:45,353 INFO L728 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 [2021-06-12 18:53:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-06-12 18:53:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-06-12 18:53:45,363 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) [2021-06-12 18:53:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-06-12 18:53:45,364 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-06-12 18:53:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:45,364 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-06-12 18:53:45,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-06-12 18:53:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:45,366 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:45,366 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:45,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-12 18:53:45,366 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:45,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:45,366 INFO L82 PathProgramCache]: Analyzing trace with hash 736290770, now seen corresponding path program 270 times [2021-06-12 18:53:45,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:45,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326592379] [2021-06-12 18:53:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:45,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:45,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326592379] [2021-06-12 18:53:45,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326592379] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:45,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:45,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:45,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767567383] [2021-06-12 18:53:45,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:45,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:45,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:45,423 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) [2021-06-12 18:53:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:45,581 INFO L93 Difference]: Finished difference Result 1399 states and 3720 transitions. [2021-06-12 18:53:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:45,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:45,583 INFO L225 Difference]: With dead ends: 1399 [2021-06-12 18:53:45,583 INFO L226 Difference]: Without dead ends: 1304 [2021-06-12 18:53:45,583 INFO L728 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 [2021-06-12 18:53:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-06-12 18:53:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-06-12 18:53:45,593 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) [2021-06-12 18:53:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-06-12 18:53:45,595 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-06-12 18:53:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:45,595 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-06-12 18:53:45,595 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) [2021-06-12 18:53:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-06-12 18:53:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:45,596 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:45,596 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:45,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-12 18:53:45,596 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1605735378, now seen corresponding path program 271 times [2021-06-12 18:53:45,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:45,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063619674] [2021-06-12 18:53:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:45,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:45,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063619674] [2021-06-12 18:53:45,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063619674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:45,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:45,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:45,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843134835] [2021-06-12 18:53:45,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:45,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:45,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:45,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:45,654 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) [2021-06-12 18:53:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:45,815 INFO L93 Difference]: Finished difference Result 1389 states and 3693 transitions. [2021-06-12 18:53:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:45,815 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 [2021-06-12 18:53:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:45,817 INFO L225 Difference]: With dead ends: 1389 [2021-06-12 18:53:45,817 INFO L226 Difference]: Without dead ends: 1292 [2021-06-12 18:53:45,817 INFO L728 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 [2021-06-12 18:53:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-12 18:53:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-06-12 18:53:45,834 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) [2021-06-12 18:53:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3347 transitions. [2021-06-12 18:53:45,836 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3347 transitions. Word has length 26 [2021-06-12 18:53:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:45,836 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3347 transitions. [2021-06-12 18:53:45,836 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) [2021-06-12 18:53:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3347 transitions. [2021-06-12 18:53:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:45,837 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:45,837 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:45,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-12 18:53:45,837 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:45,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:45,837 INFO L82 PathProgramCache]: Analyzing trace with hash 150177720, now seen corresponding path program 272 times [2021-06-12 18:53:45,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:45,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202170423] [2021-06-12 18:53:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:45,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:45,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202170423] [2021-06-12 18:53:45,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202170423] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:45,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:45,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:45,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917772738] [2021-06-12 18:53:45,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:45,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:45,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:45,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:45,894 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) [2021-06-12 18:53:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:46,057 INFO L93 Difference]: Finished difference Result 1371 states and 3646 transitions. [2021-06-12 18:53:46,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:46,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:46,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:46,059 INFO L225 Difference]: With dead ends: 1371 [2021-06-12 18:53:46,059 INFO L226 Difference]: Without dead ends: 1266 [2021-06-12 18:53:46,059 INFO L728 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 [2021-06-12 18:53:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-06-12 18:53:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1232. [2021-06-12 18:53:46,069 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) [2021-06-12 18:53:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3323 transitions. [2021-06-12 18:53:46,071 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3323 transitions. Word has length 26 [2021-06-12 18:53:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:46,071 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3323 transitions. [2021-06-12 18:53:46,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3323 transitions. [2021-06-12 18:53:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:46,072 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:46,072 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:46,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-12 18:53:46,072 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash 337951890, now seen corresponding path program 273 times [2021-06-12 18:53:46,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:46,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233181073] [2021-06-12 18:53:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:46,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:46,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233181073] [2021-06-12 18:53:46,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233181073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:46,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:46,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:46,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198768302] [2021-06-12 18:53:46,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:46,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:46,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:46,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:46,120 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) [2021-06-12 18:53:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:46,246 INFO L93 Difference]: Finished difference Result 1470 states and 3952 transitions. [2021-06-12 18:53:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:46,247 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 [2021-06-12 18:53:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:46,248 INFO L225 Difference]: With dead ends: 1470 [2021-06-12 18:53:46,248 INFO L226 Difference]: Without dead ends: 1389 [2021-06-12 18:53:46,248 INFO L728 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 [2021-06-12 18:53:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-06-12 18:53:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1270. [2021-06-12 18:53:46,259 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) [2021-06-12 18:53:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3430 transitions. [2021-06-12 18:53:46,261 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3430 transitions. Word has length 26 [2021-06-12 18:53:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:46,261 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 3430 transitions. [2021-06-12 18:53:46,261 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) [2021-06-12 18:53:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3430 transitions. [2021-06-12 18:53:46,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:46,262 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:46,262 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:46,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-12 18:53:46,262 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:46,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:46,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1207396498, now seen corresponding path program 274 times [2021-06-12 18:53:46,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:46,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772352952] [2021-06-12 18:53:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:46,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:46,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772352952] [2021-06-12 18:53:46,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772352952] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:46,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:46,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:46,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881643702] [2021-06-12 18:53:46,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:46,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:46,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:46,319 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) [2021-06-12 18:53:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:46,479 INFO L93 Difference]: Finished difference Result 1525 states and 4077 transitions. [2021-06-12 18:53:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:46,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:46,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:46,481 INFO L225 Difference]: With dead ends: 1525 [2021-06-12 18:53:46,481 INFO L226 Difference]: Without dead ends: 1330 [2021-06-12 18:53:46,481 INFO L728 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 [2021-06-12 18:53:46,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-12 18:53:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1232. [2021-06-12 18:53:46,492 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) [2021-06-12 18:53:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3311 transitions. [2021-06-12 18:53:46,493 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3311 transitions. Word has length 26 [2021-06-12 18:53:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:46,494 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3311 transitions. [2021-06-12 18:53:46,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3311 transitions. [2021-06-12 18:53:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:46,495 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:46,495 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:46,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-12 18:53:46,495 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:46,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1219336402, now seen corresponding path program 275 times [2021-06-12 18:53:46,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:46,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873737402] [2021-06-12 18:53:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:46,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:46,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873737402] [2021-06-12 18:53:46,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873737402] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:46,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:46,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:46,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24401932] [2021-06-12 18:53:46,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:46,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:46,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:46,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:46,552 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) [2021-06-12 18:53:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:46,710 INFO L93 Difference]: Finished difference Result 1421 states and 3771 transitions. [2021-06-12 18:53:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:46,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:46,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:46,712 INFO L225 Difference]: With dead ends: 1421 [2021-06-12 18:53:46,712 INFO L226 Difference]: Without dead ends: 1334 [2021-06-12 18:53:46,712 INFO L728 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 [2021-06-12 18:53:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-12 18:53:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1222. [2021-06-12 18:53:46,722 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) [2021-06-12 18:53:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3287 transitions. [2021-06-12 18:53:46,724 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3287 transitions. Word has length 26 [2021-06-12 18:53:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:46,724 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3287 transitions. [2021-06-12 18:53:46,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3287 transitions. [2021-06-12 18:53:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:46,730 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:46,730 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:46,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-12 18:53:46,730 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:46,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:46,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2088781010, now seen corresponding path program 276 times [2021-06-12 18:53:46,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:46,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816033358] [2021-06-12 18:53:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:46,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:46,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816033358] [2021-06-12 18:53:46,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816033358] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:46,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:46,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:46,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446872822] [2021-06-12 18:53:46,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:46,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:46,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:46,787 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) [2021-06-12 18:53:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:46,953 INFO L93 Difference]: Finished difference Result 1394 states and 3706 transitions. [2021-06-12 18:53:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:46,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:46,955 INFO L225 Difference]: With dead ends: 1394 [2021-06-12 18:53:46,955 INFO L226 Difference]: Without dead ends: 1297 [2021-06-12 18:53:46,955 INFO L728 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 [2021-06-12 18:53:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-06-12 18:53:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1237. [2021-06-12 18:53:46,966 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) [2021-06-12 18:53:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 3323 transitions. [2021-06-12 18:53:46,967 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 3323 transitions. Word has length 26 [2021-06-12 18:53:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:46,967 INFO L482 AbstractCegarLoop]: Abstraction has 1237 states and 3323 transitions. [2021-06-12 18:53:46,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 3323 transitions. [2021-06-12 18:53:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:46,968 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:46,969 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:46,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-12 18:53:46,969 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:46,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1393983698, now seen corresponding path program 277 times [2021-06-12 18:53:46,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:46,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061232424] [2021-06-12 18:53:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:47,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:47,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061232424] [2021-06-12 18:53:47,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061232424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:47,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:47,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:47,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533166109] [2021-06-12 18:53:47,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:47,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:47,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:47,027 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) [2021-06-12 18:53:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:47,195 INFO L93 Difference]: Finished difference Result 1383 states and 3684 transitions. [2021-06-12 18:53:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:47,197 INFO L225 Difference]: With dead ends: 1383 [2021-06-12 18:53:47,197 INFO L226 Difference]: Without dead ends: 1281 [2021-06-12 18:53:47,197 INFO L728 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 [2021-06-12 18:53:47,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-12 18:53:47,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1234. [2021-06-12 18:53:47,208 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) [2021-06-12 18:53:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3315 transitions. [2021-06-12 18:53:47,209 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3315 transitions. Word has length 26 [2021-06-12 18:53:47,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:47,210 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3315 transitions. [2021-06-12 18:53:47,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:47,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3315 transitions. [2021-06-12 18:53:47,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:47,211 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:47,211 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:47,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-12 18:53:47,211 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:47,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:47,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1871569878, now seen corresponding path program 278 times [2021-06-12 18:53:47,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:47,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669747441] [2021-06-12 18:53:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:47,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:47,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669747441] [2021-06-12 18:53:47,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669747441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:47,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:47,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:47,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656599316] [2021-06-12 18:53:47,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:47,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:47,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:47,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:47,268 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) [2021-06-12 18:53:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:47,422 INFO L93 Difference]: Finished difference Result 1413 states and 3754 transitions. [2021-06-12 18:53:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:47,422 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 [2021-06-12 18:53:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:47,423 INFO L225 Difference]: With dead ends: 1413 [2021-06-12 18:53:47,423 INFO L226 Difference]: Without dead ends: 1284 [2021-06-12 18:53:47,424 INFO L728 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 [2021-06-12 18:53:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-06-12 18:53:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2021-06-12 18:53:47,434 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) [2021-06-12 18:53:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3311 transitions. [2021-06-12 18:53:47,435 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3311 transitions. Word has length 26 [2021-06-12 18:53:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:47,436 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3311 transitions. [2021-06-12 18:53:47,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3311 transitions. [2021-06-12 18:53:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:47,437 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:47,437 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:47,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-12 18:53:47,437 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:47,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:47,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1011254384, now seen corresponding path program 279 times [2021-06-12 18:53:47,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:47,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178125583] [2021-06-12 18:53:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:47,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:47,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178125583] [2021-06-12 18:53:47,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178125583] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:47,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:47,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:47,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475862985] [2021-06-12 18:53:47,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:47,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:47,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:47,495 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) [2021-06-12 18:53:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:47,653 INFO L93 Difference]: Finished difference Result 1364 states and 3627 transitions. [2021-06-12 18:53:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:47,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:47,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:47,655 INFO L225 Difference]: With dead ends: 1364 [2021-06-12 18:53:47,655 INFO L226 Difference]: Without dead ends: 1283 [2021-06-12 18:53:47,655 INFO L728 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 [2021-06-12 18:53:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-06-12 18:53:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1235. [2021-06-12 18:53:47,670 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) [2021-06-12 18:53:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3315 transitions. [2021-06-12 18:53:47,671 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3315 transitions. Word has length 26 [2021-06-12 18:53:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:47,672 INFO L482 AbstractCegarLoop]: Abstraction has 1235 states and 3315 transitions. [2021-06-12 18:53:47,672 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) [2021-06-12 18:53:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3315 transitions. [2021-06-12 18:53:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:47,673 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:47,673 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:47,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-12 18:53:47,673 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:47,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:47,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1880698992, now seen corresponding path program 280 times [2021-06-12 18:53:47,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:47,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195511609] [2021-06-12 18:53:47,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:47,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:47,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195511609] [2021-06-12 18:53:47,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195511609] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:47,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:47,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:47,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313160302] [2021-06-12 18:53:47,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:47,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:47,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:47,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:47,731 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) [2021-06-12 18:53:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:47,899 INFO L93 Difference]: Finished difference Result 1374 states and 3654 transitions. [2021-06-12 18:53:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:47,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:47,901 INFO L225 Difference]: With dead ends: 1374 [2021-06-12 18:53:47,901 INFO L226 Difference]: Without dead ends: 1277 [2021-06-12 18:53:47,901 INFO L728 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 [2021-06-12 18:53:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-06-12 18:53:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1236. [2021-06-12 18:53:47,911 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) [2021-06-12 18:53:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3317 transitions. [2021-06-12 18:53:47,913 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3317 transitions. Word has length 26 [2021-06-12 18:53:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:47,913 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3317 transitions. [2021-06-12 18:53:47,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3317 transitions. [2021-06-12 18:53:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:47,914 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:47,914 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:47,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-12 18:53:47,914 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:47,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:47,915 INFO L82 PathProgramCache]: Analyzing trace with hash 411987762, now seen corresponding path program 281 times [2021-06-12 18:53:47,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:47,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858218726] [2021-06-12 18:53:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:47,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:47,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858218726] [2021-06-12 18:53:47,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858218726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:47,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:47,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:47,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082911884] [2021-06-12 18:53:47,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:47,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:47,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:47,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:47,972 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) [2021-06-12 18:53:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:48,135 INFO L93 Difference]: Finished difference Result 1361 states and 3614 transitions. [2021-06-12 18:53:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:48,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:48,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:48,137 INFO L225 Difference]: With dead ends: 1361 [2021-06-12 18:53:48,137 INFO L226 Difference]: Without dead ends: 1270 [2021-06-12 18:53:48,137 INFO L728 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 [2021-06-12 18:53:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-06-12 18:53:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1230. [2021-06-12 18:53:48,147 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) [2021-06-12 18:53:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3293 transitions. [2021-06-12 18:53:48,149 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3293 transitions. Word has length 26 [2021-06-12 18:53:48,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:48,149 INFO L482 AbstractCegarLoop]: Abstraction has 1230 states and 3293 transitions. [2021-06-12 18:53:48,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3293 transitions. [2021-06-12 18:53:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:48,150 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:48,150 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:48,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-12 18:53:48,150 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:48,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:48,150 INFO L82 PathProgramCache]: Analyzing trace with hash 425141334, now seen corresponding path program 282 times [2021-06-12 18:53:48,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:48,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139147302] [2021-06-12 18:53:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:48,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:48,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139147302] [2021-06-12 18:53:48,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139147302] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:48,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:48,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:48,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237140524] [2021-06-12 18:53:48,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:48,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:48,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:48,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:48,210 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) [2021-06-12 18:53:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:48,396 INFO L93 Difference]: Finished difference Result 1343 states and 3570 transitions. [2021-06-12 18:53:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:48,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:48,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:48,398 INFO L225 Difference]: With dead ends: 1343 [2021-06-12 18:53:48,398 INFO L226 Difference]: Without dead ends: 1244 [2021-06-12 18:53:48,398 INFO L728 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 [2021-06-12 18:53:48,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-06-12 18:53:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1229. [2021-06-12 18:53:48,408 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) [2021-06-12 18:53:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3292 transitions. [2021-06-12 18:53:48,410 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3292 transitions. Word has length 26 [2021-06-12 18:53:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:48,410 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3292 transitions. [2021-06-12 18:53:48,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3292 transitions. [2021-06-12 18:53:48,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:48,411 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:48,411 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:48,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-12 18:53:48,411 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:48,411 INFO L82 PathProgramCache]: Analyzing trace with hash 804446418, now seen corresponding path program 283 times [2021-06-12 18:53:48,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:48,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72684572] [2021-06-12 18:53:48,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:48,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:48,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72684572] [2021-06-12 18:53:48,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72684572] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:48,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:48,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:48,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857222933] [2021-06-12 18:53:48,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:48,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:48,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:48,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:48,481 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) [2021-06-12 18:53:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:48,648 INFO L93 Difference]: Finished difference Result 1364 states and 3621 transitions. [2021-06-12 18:53:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:48,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:48,650 INFO L225 Difference]: With dead ends: 1364 [2021-06-12 18:53:48,650 INFO L226 Difference]: Without dead ends: 1283 [2021-06-12 18:53:48,650 INFO L728 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 [2021-06-12 18:53:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-06-12 18:53:48,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1229. [2021-06-12 18:53:48,664 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) [2021-06-12 18:53:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3294 transitions. [2021-06-12 18:53:48,666 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3294 transitions. Word has length 26 [2021-06-12 18:53:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:48,666 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3294 transitions. [2021-06-12 18:53:48,666 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) [2021-06-12 18:53:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3294 transitions. [2021-06-12 18:53:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:48,667 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:48,667 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:48,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-12 18:53:48,667 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:48,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1673891026, now seen corresponding path program 284 times [2021-06-12 18:53:48,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:48,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987748798] [2021-06-12 18:53:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:48,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:48,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987748798] [2021-06-12 18:53:48,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987748798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:48,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:48,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:48,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014074051] [2021-06-12 18:53:48,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:48,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:48,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:48,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:48,730 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) [2021-06-12 18:53:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:48,893 INFO L93 Difference]: Finished difference Result 1372 states and 3640 transitions. [2021-06-12 18:53:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:48,894 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 [2021-06-12 18:53:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:48,895 INFO L225 Difference]: With dead ends: 1372 [2021-06-12 18:53:48,895 INFO L226 Difference]: Without dead ends: 1275 [2021-06-12 18:53:48,895 INFO L728 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 [2021-06-12 18:53:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-06-12 18:53:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1228. [2021-06-12 18:53:48,905 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) [2021-06-12 18:53:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 3287 transitions. [2021-06-12 18:53:48,907 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 3287 transitions. Word has length 26 [2021-06-12 18:53:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:48,907 INFO L482 AbstractCegarLoop]: Abstraction has 1228 states and 3287 transitions. [2021-06-12 18:53:48,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 3287 transitions. [2021-06-12 18:53:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:48,908 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:48,908 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:48,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-12 18:53:48,908 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:48,909 INFO L82 PathProgramCache]: Analyzing trace with hash -700392400, now seen corresponding path program 285 times [2021-06-12 18:53:48,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:48,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951673099] [2021-06-12 18:53:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:48,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:48,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951673099] [2021-06-12 18:53:48,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951673099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:48,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:48,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:48,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076594457] [2021-06-12 18:53:48,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:48,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:48,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:48,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:48,975 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) [2021-06-12 18:53:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:49,135 INFO L93 Difference]: Finished difference Result 1374 states and 3642 transitions. [2021-06-12 18:53:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:49,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:49,137 INFO L225 Difference]: With dead ends: 1374 [2021-06-12 18:53:49,137 INFO L226 Difference]: Without dead ends: 1287 [2021-06-12 18:53:49,137 INFO L728 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 [2021-06-12 18:53:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-06-12 18:53:49,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1225. [2021-06-12 18:53:49,147 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) [2021-06-12 18:53:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3275 transitions. [2021-06-12 18:53:49,149 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3275 transitions. Word has length 26 [2021-06-12 18:53:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:49,149 INFO L482 AbstractCegarLoop]: Abstraction has 1225 states and 3275 transitions. [2021-06-12 18:53:49,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3275 transitions. [2021-06-12 18:53:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:49,150 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:49,150 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:49,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-12 18:53:49,150 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1419545292, now seen corresponding path program 286 times [2021-06-12 18:53:49,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:49,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455407618] [2021-06-12 18:53:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:49,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:49,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455407618] [2021-06-12 18:53:49,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455407618] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:49,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:49,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:49,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946610519] [2021-06-12 18:53:49,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:49,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:49,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:49,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:49,221 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) [2021-06-12 18:53:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:49,382 INFO L93 Difference]: Finished difference Result 1354 states and 3596 transitions. [2021-06-12 18:53:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:49,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:49,383 INFO L225 Difference]: With dead ends: 1354 [2021-06-12 18:53:49,383 INFO L226 Difference]: Without dead ends: 1252 [2021-06-12 18:53:49,384 INFO L728 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 [2021-06-12 18:53:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-06-12 18:53:49,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1223. [2021-06-12 18:53:49,394 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) [2021-06-12 18:53:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3273 transitions. [2021-06-12 18:53:49,395 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3273 transitions. Word has length 26 [2021-06-12 18:53:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:49,395 INFO L482 AbstractCegarLoop]: Abstraction has 1223 states and 3273 transitions. [2021-06-12 18:53:49,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3273 transitions. [2021-06-12 18:53:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:49,396 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:49,396 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:49,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-12 18:53:49,396 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:49,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:49,397 INFO L82 PathProgramCache]: Analyzing trace with hash -638181704, now seen corresponding path program 287 times [2021-06-12 18:53:49,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:49,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47599687] [2021-06-12 18:53:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:49,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:49,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47599687] [2021-06-12 18:53:49,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47599687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:49,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:49,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:49,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660250314] [2021-06-12 18:53:49,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:49,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:49,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:49,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:49,458 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) [2021-06-12 18:53:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:49,625 INFO L93 Difference]: Finished difference Result 1345 states and 3575 transitions. [2021-06-12 18:53:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:49,627 INFO L225 Difference]: With dead ends: 1345 [2021-06-12 18:53:49,627 INFO L226 Difference]: Without dead ends: 1248 [2021-06-12 18:53:49,627 INFO L728 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 [2021-06-12 18:53:49,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-12 18:53:49,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1222. [2021-06-12 18:53:49,637 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) [2021-06-12 18:53:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3270 transitions. [2021-06-12 18:53:49,639 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3270 transitions. Word has length 26 [2021-06-12 18:53:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:49,639 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3270 transitions. [2021-06-12 18:53:49,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3270 transitions. [2021-06-12 18:53:49,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:49,640 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:49,640 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:49,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-12 18:53:49,640 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2030326250, now seen corresponding path program 288 times [2021-06-12 18:53:49,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:49,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877725601] [2021-06-12 18:53:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:49,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:49,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877725601] [2021-06-12 18:53:49,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877725601] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:49,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:49,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:49,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684445367] [2021-06-12 18:53:49,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:49,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:49,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:49,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:49,698 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) [2021-06-12 18:53:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:49,860 INFO L93 Difference]: Finished difference Result 1347 states and 3575 transitions. [2021-06-12 18:53:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:49,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:49,862 INFO L225 Difference]: With dead ends: 1347 [2021-06-12 18:53:49,862 INFO L226 Difference]: Without dead ends: 1226 [2021-06-12 18:53:49,862 INFO L728 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 [2021-06-12 18:53:49,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-06-12 18:53:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1190. [2021-06-12 18:53:49,872 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) [2021-06-12 18:53:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3194 transitions. [2021-06-12 18:53:49,874 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3194 transitions. Word has length 26 [2021-06-12 18:53:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:49,874 INFO L482 AbstractCegarLoop]: Abstraction has 1190 states and 3194 transitions. [2021-06-12 18:53:49,874 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) [2021-06-12 18:53:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3194 transitions. [2021-06-12 18:53:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:49,875 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:49,875 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:49,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-12 18:53:49,875 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:49,875 INFO L82 PathProgramCache]: Analyzing trace with hash -979168576, now seen corresponding path program 289 times [2021-06-12 18:53:49,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:49,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983474361] [2021-06-12 18:53:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:49,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:49,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983474361] [2021-06-12 18:53:49,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983474361] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:49,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:49,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:49,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124463398] [2021-06-12 18:53:49,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:49,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:49,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:49,922 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) [2021-06-12 18:53:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:50,036 INFO L93 Difference]: Finished difference Result 1469 states and 3888 transitions. [2021-06-12 18:53:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:50,037 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 [2021-06-12 18:53:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:50,038 INFO L225 Difference]: With dead ends: 1469 [2021-06-12 18:53:50,038 INFO L226 Difference]: Without dead ends: 1294 [2021-06-12 18:53:50,038 INFO L728 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 [2021-06-12 18:53:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-12 18:53:50,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1264. [2021-06-12 18:53:50,048 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) [2021-06-12 18:53:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3363 transitions. [2021-06-12 18:53:50,050 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3363 transitions. Word has length 26 [2021-06-12 18:53:50,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:50,050 INFO L482 AbstractCegarLoop]: Abstraction has 1264 states and 3363 transitions. [2021-06-12 18:53:50,050 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) [2021-06-12 18:53:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3363 transitions. [2021-06-12 18:53:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:50,051 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:50,051 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:50,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-12 18:53:50,051 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:50,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1887419712, now seen corresponding path program 290 times [2021-06-12 18:53:50,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:50,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067782633] [2021-06-12 18:53:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:50,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:50,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067782633] [2021-06-12 18:53:50,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067782633] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:50,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:50,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:50,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538078362] [2021-06-12 18:53:50,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:50,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:50,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:50,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:50,099 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) [2021-06-12 18:53:50,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:50,219 INFO L93 Difference]: Finished difference Result 1463 states and 3865 transitions. [2021-06-12 18:53:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:50,219 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 [2021-06-12 18:53:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:50,220 INFO L225 Difference]: With dead ends: 1463 [2021-06-12 18:53:50,220 INFO L226 Difference]: Without dead ends: 1305 [2021-06-12 18:53:50,221 INFO L728 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 [2021-06-12 18:53:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-06-12 18:53:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1277. [2021-06-12 18:53:50,231 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) [2021-06-12 18:53:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3382 transitions. [2021-06-12 18:53:50,232 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3382 transitions. Word has length 26 [2021-06-12 18:53:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:50,233 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3382 transitions. [2021-06-12 18:53:50,233 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) [2021-06-12 18:53:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3382 transitions. [2021-06-12 18:53:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:50,234 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:50,234 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:50,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-12 18:53:50,234 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash -966843746, now seen corresponding path program 291 times [2021-06-12 18:53:50,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:50,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709585313] [2021-06-12 18:53:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:50,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:50,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709585313] [2021-06-12 18:53:50,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709585313] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:50,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:50,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:50,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472190062] [2021-06-12 18:53:50,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:50,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:50,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:50,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:50,283 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) [2021-06-12 18:53:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:50,403 INFO L93 Difference]: Finished difference Result 1480 states and 3886 transitions. [2021-06-12 18:53:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:50,403 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 [2021-06-12 18:53:50,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:50,405 INFO L225 Difference]: With dead ends: 1480 [2021-06-12 18:53:50,405 INFO L226 Difference]: Without dead ends: 1330 [2021-06-12 18:53:50,405 INFO L728 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 [2021-06-12 18:53:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-12 18:53:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1268. [2021-06-12 18:53:50,415 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) [2021-06-12 18:53:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3355 transitions. [2021-06-12 18:53:50,417 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3355 transitions. Word has length 26 [2021-06-12 18:53:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:50,417 INFO L482 AbstractCegarLoop]: Abstraction has 1268 states and 3355 transitions. [2021-06-12 18:53:50,417 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) [2021-06-12 18:53:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3355 transitions. [2021-06-12 18:53:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:50,418 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:50,418 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:50,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-12 18:53:50,418 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:50,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:50,418 INFO L82 PathProgramCache]: Analyzing trace with hash -690570134, now seen corresponding path program 292 times [2021-06-12 18:53:50,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:50,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849992424] [2021-06-12 18:53:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:50,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:50,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849992424] [2021-06-12 18:53:50,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849992424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:50,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:50,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:50,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887652212] [2021-06-12 18:53:50,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:50,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:50,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:50,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:50,477 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) [2021-06-12 18:53:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:50,598 INFO L93 Difference]: Finished difference Result 1405 states and 3686 transitions. [2021-06-12 18:53:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:50,598 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 [2021-06-12 18:53:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:50,600 INFO L225 Difference]: With dead ends: 1405 [2021-06-12 18:53:50,600 INFO L226 Difference]: Without dead ends: 1180 [2021-06-12 18:53:50,600 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-06-12 18:53:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1124. [2021-06-12 18:53:50,609 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) [2021-06-12 18:53:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2972 transitions. [2021-06-12 18:53:50,610 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2972 transitions. Word has length 26 [2021-06-12 18:53:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:50,610 INFO L482 AbstractCegarLoop]: Abstraction has 1124 states and 2972 transitions. [2021-06-12 18:53:50,610 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) [2021-06-12 18:53:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2972 transitions. [2021-06-12 18:53:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:50,611 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:50,611 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:50,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-12 18:53:50,612 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1436945088, now seen corresponding path program 293 times [2021-06-12 18:53:50,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:50,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534391829] [2021-06-12 18:53:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:50,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:50,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534391829] [2021-06-12 18:53:50,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534391829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:50,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:50,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:50,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290296574] [2021-06-12 18:53:50,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:50,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:50,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:50,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:50,659 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) [2021-06-12 18:53:50,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:50,782 INFO L93 Difference]: Finished difference Result 1284 states and 3343 transitions. [2021-06-12 18:53:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:50,782 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 [2021-06-12 18:53:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:50,783 INFO L225 Difference]: With dead ends: 1284 [2021-06-12 18:53:50,783 INFO L226 Difference]: Without dead ends: 1064 [2021-06-12 18:53:50,783 INFO L728 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 [2021-06-12 18:53:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-06-12 18:53:50,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1040. [2021-06-12 18:53:50,792 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) [2021-06-12 18:53:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2714 transitions. [2021-06-12 18:53:50,793 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2714 transitions. Word has length 26 [2021-06-12 18:53:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:50,793 INFO L482 AbstractCegarLoop]: Abstraction has 1040 states and 2714 transitions. [2021-06-12 18:53:50,793 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) [2021-06-12 18:53:50,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2714 transitions. [2021-06-12 18:53:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:50,794 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:50,794 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:50,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-12 18:53:50,794 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:50,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1998437214, now seen corresponding path program 294 times [2021-06-12 18:53:50,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:50,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923112009] [2021-06-12 18:53:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:50,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:50,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923112009] [2021-06-12 18:53:50,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923112009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:50,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:50,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:50,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407528960] [2021-06-12 18:53:50,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:50,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:50,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:50,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:50,851 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) [2021-06-12 18:53:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:51,007 INFO L93 Difference]: Finished difference Result 1182 states and 3054 transitions. [2021-06-12 18:53:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:51,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:51,008 INFO L225 Difference]: With dead ends: 1182 [2021-06-12 18:53:51,008 INFO L226 Difference]: Without dead ends: 982 [2021-06-12 18:53:51,009 INFO L728 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 [2021-06-12 18:53:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-06-12 18:53:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 950. [2021-06-12 18:53:51,016 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) [2021-06-12 18:53:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2488 transitions. [2021-06-12 18:53:51,017 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2488 transitions. Word has length 26 [2021-06-12 18:53:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:51,018 INFO L482 AbstractCegarLoop]: Abstraction has 950 states and 2488 transitions. [2021-06-12 18:53:51,018 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) [2021-06-12 18:53:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2488 transitions. [2021-06-12 18:53:51,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:51,018 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:51,018 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:51,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-12 18:53:51,019 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:51,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1654753632, now seen corresponding path program 295 times [2021-06-12 18:53:51,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:51,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278121494] [2021-06-12 18:53:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:51,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:51,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278121494] [2021-06-12 18:53:51,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278121494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:51,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:51,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:51,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905781573] [2021-06-12 18:53:51,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:51,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:51,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:51,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:51,076 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) [2021-06-12 18:53:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:51,233 INFO L93 Difference]: Finished difference Result 1068 states and 2776 transitions. [2021-06-12 18:53:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:51,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:51,235 INFO L225 Difference]: With dead ends: 1068 [2021-06-12 18:53:51,235 INFO L226 Difference]: Without dead ends: 975 [2021-06-12 18:53:51,235 INFO L728 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 [2021-06-12 18:53:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-06-12 18:53:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 956. [2021-06-12 18:53:51,243 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) [2021-06-12 18:53:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2498 transitions. [2021-06-12 18:53:51,244 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2498 transitions. Word has length 26 [2021-06-12 18:53:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:51,244 INFO L482 AbstractCegarLoop]: Abstraction has 956 states and 2498 transitions. [2021-06-12 18:53:51,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2498 transitions. [2021-06-12 18:53:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:51,245 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:51,245 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:51,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-12 18:53:51,245 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:51,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1731962528, now seen corresponding path program 296 times [2021-06-12 18:53:51,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:51,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002095830] [2021-06-12 18:53:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:51,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:51,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002095830] [2021-06-12 18:53:51,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002095830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:51,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:51,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:51,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958113845] [2021-06-12 18:53:51,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:51,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:51,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:51,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:51,302 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) [2021-06-12 18:53:51,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:51,465 INFO L93 Difference]: Finished difference Result 1078 states and 2806 transitions. [2021-06-12 18:53:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:51,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:51,466 INFO L225 Difference]: With dead ends: 1078 [2021-06-12 18:53:51,466 INFO L226 Difference]: Without dead ends: 1003 [2021-06-12 18:53:51,466 INFO L728 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 [2021-06-12 18:53:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-06-12 18:53:51,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 959. [2021-06-12 18:53:51,474 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) [2021-06-12 18:53:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2509 transitions. [2021-06-12 18:53:51,475 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2509 transitions. Word has length 26 [2021-06-12 18:53:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:51,475 INFO L482 AbstractCegarLoop]: Abstraction has 959 states and 2509 transitions. [2021-06-12 18:53:51,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2509 transitions. [2021-06-12 18:53:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:51,476 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:51,476 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:51,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-12 18:53:51,476 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:51,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1693560160, now seen corresponding path program 297 times [2021-06-12 18:53:51,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:51,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77108286] [2021-06-12 18:53:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:51,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:51,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77108286] [2021-06-12 18:53:51,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77108286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:51,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:51,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:51,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757227687] [2021-06-12 18:53:51,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:51,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:51,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:51,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:51,533 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) [2021-06-12 18:53:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:51,692 INFO L93 Difference]: Finished difference Result 1113 states and 2881 transitions. [2021-06-12 18:53:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:51,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:51,693 INFO L225 Difference]: With dead ends: 1113 [2021-06-12 18:53:51,694 INFO L226 Difference]: Without dead ends: 981 [2021-06-12 18:53:51,694 INFO L728 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 [2021-06-12 18:53:51,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-06-12 18:53:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 941. [2021-06-12 18:53:51,701 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) [2021-06-12 18:53:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2463 transitions. [2021-06-12 18:53:51,702 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2463 transitions. Word has length 26 [2021-06-12 18:53:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:51,702 INFO L482 AbstractCegarLoop]: Abstraction has 941 states and 2463 transitions. [2021-06-12 18:53:51,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2463 transitions. [2021-06-12 18:53:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:51,703 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:51,703 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:51,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-12 18:53:51,704 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:51,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:51,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1642428802, now seen corresponding path program 298 times [2021-06-12 18:53:51,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:51,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586795773] [2021-06-12 18:53:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:51,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:51,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586795773] [2021-06-12 18:53:51,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586795773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:51,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:51,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:51,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349221307] [2021-06-12 18:53:51,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:51,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:51,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:51,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:51,773 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) [2021-06-12 18:53:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:51,932 INFO L93 Difference]: Finished difference Result 1045 states and 2715 transitions. [2021-06-12 18:53:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:51,934 INFO L225 Difference]: With dead ends: 1045 [2021-06-12 18:53:51,934 INFO L226 Difference]: Without dead ends: 955 [2021-06-12 18:53:51,934 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-06-12 18:53:51,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 926. [2021-06-12 18:53:51,942 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) [2021-06-12 18:53:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2430 transitions. [2021-06-12 18:53:51,943 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2430 transitions. Word has length 26 [2021-06-12 18:53:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:51,943 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2430 transitions. [2021-06-12 18:53:51,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2430 transitions. [2021-06-12 18:53:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:51,944 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:51,944 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:51,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-12 18:53:51,944 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash -363909022, now seen corresponding path program 299 times [2021-06-12 18:53:51,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:51,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218758536] [2021-06-12 18:53:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:52,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:52,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218758536] [2021-06-12 18:53:52,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218758536] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:52,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:52,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:52,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613180053] [2021-06-12 18:53:52,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:52,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:52,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:52,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:52,002 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) [2021-06-12 18:53:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:52,160 INFO L93 Difference]: Finished difference Result 1077 states and 2798 transitions. [2021-06-12 18:53:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:52,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:52,162 INFO L225 Difference]: With dead ends: 1077 [2021-06-12 18:53:52,162 INFO L226 Difference]: Without dead ends: 984 [2021-06-12 18:53:52,162 INFO L728 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 [2021-06-12 18:53:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-06-12 18:53:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 926. [2021-06-12 18:53:52,170 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) [2021-06-12 18:53:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2422 transitions. [2021-06-12 18:53:52,171 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2422 transitions. Word has length 26 [2021-06-12 18:53:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:52,171 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2422 transitions. [2021-06-12 18:53:52,171 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) [2021-06-12 18:53:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2422 transitions. [2021-06-12 18:53:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:52,172 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:52,172 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:52,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-12 18:53:52,172 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:52,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2143601274, now seen corresponding path program 300 times [2021-06-12 18:53:52,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:52,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369616170] [2021-06-12 18:53:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:52,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:52,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369616170] [2021-06-12 18:53:52,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369616170] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:52,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:52,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:52,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471684388] [2021-06-12 18:53:52,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:52,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:52,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:52,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:52,229 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) [2021-06-12 18:53:52,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:52,392 INFO L93 Difference]: Finished difference Result 1095 states and 2837 transitions. [2021-06-12 18:53:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:52,392 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 [2021-06-12 18:53:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:52,393 INFO L225 Difference]: With dead ends: 1095 [2021-06-12 18:53:52,393 INFO L226 Difference]: Without dead ends: 1012 [2021-06-12 18:53:52,393 INFO L728 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 [2021-06-12 18:53:52,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-06-12 18:53:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 914. [2021-06-12 18:53:52,401 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) [2021-06-12 18:53:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2395 transitions. [2021-06-12 18:53:52,402 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2395 transitions. Word has length 26 [2021-06-12 18:53:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:52,402 INFO L482 AbstractCegarLoop]: Abstraction has 914 states and 2395 transitions. [2021-06-12 18:53:52,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2395 transitions. [2021-06-12 18:53:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:52,403 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:52,403 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:52,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-12 18:53:52,403 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:52,403 INFO L82 PathProgramCache]: Analyzing trace with hash 574672732, now seen corresponding path program 301 times [2021-06-12 18:53:52,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:52,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948047813] [2021-06-12 18:53:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:52,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:52,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948047813] [2021-06-12 18:53:52,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948047813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:52,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:52,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:52,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072337358] [2021-06-12 18:53:52,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:52,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:52,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:52,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:52,460 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) [2021-06-12 18:53:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:52,617 INFO L93 Difference]: Finished difference Result 1015 states and 2644 transitions. [2021-06-12 18:53:52,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:52,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:52,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:52,619 INFO L225 Difference]: With dead ends: 1015 [2021-06-12 18:53:52,619 INFO L226 Difference]: Without dead ends: 928 [2021-06-12 18:53:52,619 INFO L728 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 [2021-06-12 18:53:52,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-06-12 18:53:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 876. [2021-06-12 18:53:52,626 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) [2021-06-12 18:53:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2300 transitions. [2021-06-12 18:53:52,627 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2300 transitions. Word has length 26 [2021-06-12 18:53:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:52,627 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2300 transitions. [2021-06-12 18:53:52,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2300 transitions. [2021-06-12 18:53:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:52,628 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:52,628 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:52,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-12 18:53:52,629 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash 828357852, now seen corresponding path program 302 times [2021-06-12 18:53:52,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:52,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578191650] [2021-06-12 18:53:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:52,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:52,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578191650] [2021-06-12 18:53:52,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578191650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:52,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:52,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:52,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518893059] [2021-06-12 18:53:52,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:52,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:52,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:52,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:52,690 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) [2021-06-12 18:53:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:52,849 INFO L93 Difference]: Finished difference Result 1024 states and 2650 transitions. [2021-06-12 18:53:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:52,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:52,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:52,850 INFO L225 Difference]: With dead ends: 1024 [2021-06-12 18:53:52,850 INFO L226 Difference]: Without dead ends: 949 [2021-06-12 18:53:52,850 INFO L728 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 [2021-06-12 18:53:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-06-12 18:53:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 881. [2021-06-12 18:53:52,858 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) [2021-06-12 18:53:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2316 transitions. [2021-06-12 18:53:52,859 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2316 transitions. Word has length 26 [2021-06-12 18:53:52,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:52,859 INFO L482 AbstractCegarLoop]: Abstraction has 881 states and 2316 transitions. [2021-06-12 18:53:52,859 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) [2021-06-12 18:53:52,859 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2316 transitions. [2021-06-12 18:53:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:52,860 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:52,860 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:52,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-12 18:53:52,860 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:52,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1697802460, now seen corresponding path program 303 times [2021-06-12 18:53:52,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:52,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818264109] [2021-06-12 18:53:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:52,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:52,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818264109] [2021-06-12 18:53:52,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818264109] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:52,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:52,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:52,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767799062] [2021-06-12 18:53:52,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:52,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:52,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:52,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:52,918 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) [2021-06-12 18:53:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:53,078 INFO L93 Difference]: Finished difference Result 1013 states and 2642 transitions. [2021-06-12 18:53:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:53,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:53,080 INFO L225 Difference]: With dead ends: 1013 [2021-06-12 18:53:53,080 INFO L226 Difference]: Without dead ends: 912 [2021-06-12 18:53:53,080 INFO L728 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 [2021-06-12 18:53:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-06-12 18:53:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 880. [2021-06-12 18:53:53,087 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) [2021-06-12 18:53:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2312 transitions. [2021-06-12 18:53:53,088 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2312 transitions. Word has length 26 [2021-06-12 18:53:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:53,088 INFO L482 AbstractCegarLoop]: Abstraction has 880 states and 2312 transitions. [2021-06-12 18:53:53,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:53,088 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2312 transitions. [2021-06-12 18:53:53,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:53,089 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:53,089 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:53,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-12 18:53:53,089 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:53,090 INFO L82 PathProgramCache]: Analyzing trace with hash 229091230, now seen corresponding path program 304 times [2021-06-12 18:53:53,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:53,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561259364] [2021-06-12 18:53:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:53,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:53,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561259364] [2021-06-12 18:53:53,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561259364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:53,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:53,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:53,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074345915] [2021-06-12 18:53:53,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:53,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:53,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:53,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:53,148 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) [2021-06-12 18:53:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:53,306 INFO L93 Difference]: Finished difference Result 1005 states and 2609 transitions. [2021-06-12 18:53:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:53,306 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 [2021-06-12 18:53:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:53,308 INFO L225 Difference]: With dead ends: 1005 [2021-06-12 18:53:53,308 INFO L226 Difference]: Without dead ends: 924 [2021-06-12 18:53:53,308 INFO L728 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 [2021-06-12 18:53:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-06-12 18:53:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 882. [2021-06-12 18:53:53,315 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) [2021-06-12 18:53:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2320 transitions. [2021-06-12 18:53:53,316 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2320 transitions. Word has length 26 [2021-06-12 18:53:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:53,316 INFO L482 AbstractCegarLoop]: Abstraction has 882 states and 2320 transitions. [2021-06-12 18:53:53,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2320 transitions. [2021-06-12 18:53:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:53,317 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:53,317 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:53,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-12 18:53:53,317 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:53,317 INFO L82 PathProgramCache]: Analyzing trace with hash 621549886, now seen corresponding path program 305 times [2021-06-12 18:53:53,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:53,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482365707] [2021-06-12 18:53:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:53,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:53,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482365707] [2021-06-12 18:53:53,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482365707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:53,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:53,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:53,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431977794] [2021-06-12 18:53:53,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:53,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:53,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:53,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:53,379 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) [2021-06-12 18:53:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:53,536 INFO L93 Difference]: Finished difference Result 1011 states and 2638 transitions. [2021-06-12 18:53:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:53,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:53,537 INFO L225 Difference]: With dead ends: 1011 [2021-06-12 18:53:53,537 INFO L226 Difference]: Without dead ends: 936 [2021-06-12 18:53:53,537 INFO L728 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 [2021-06-12 18:53:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-06-12 18:53:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 886. [2021-06-12 18:53:53,545 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) [2021-06-12 18:53:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2334 transitions. [2021-06-12 18:53:53,546 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2334 transitions. Word has length 26 [2021-06-12 18:53:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:53,546 INFO L482 AbstractCegarLoop]: Abstraction has 886 states and 2334 transitions. [2021-06-12 18:53:53,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2334 transitions. [2021-06-12 18:53:53,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:53,547 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:53,547 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:53,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-12 18:53:53,547 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:53,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1490994494, now seen corresponding path program 306 times [2021-06-12 18:53:53,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:53,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223812993] [2021-06-12 18:53:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:53,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:53,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223812993] [2021-06-12 18:53:53,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223812993] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:53,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:53,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:53,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610647564] [2021-06-12 18:53:53,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:53,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:53,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:53,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:53,620 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) [2021-06-12 18:53:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:53,782 INFO L93 Difference]: Finished difference Result 1026 states and 2678 transitions. [2021-06-12 18:53:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:53,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:53,784 INFO L225 Difference]: With dead ends: 1026 [2021-06-12 18:53:53,784 INFO L226 Difference]: Without dead ends: 925 [2021-06-12 18:53:53,784 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-06-12 18:53:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 883. [2021-06-12 18:53:53,791 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) [2021-06-12 18:53:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2325 transitions. [2021-06-12 18:53:53,792 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2325 transitions. Word has length 26 [2021-06-12 18:53:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:53,792 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2325 transitions. [2021-06-12 18:53:53,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2325 transitions. [2021-06-12 18:53:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:53,793 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:53,793 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:53,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-12 18:53:53,793 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:53,793 INFO L82 PathProgramCache]: Analyzing trace with hash -883288932, now seen corresponding path program 307 times [2021-06-12 18:53:53,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:53,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657525303] [2021-06-12 18:53:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:53,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:53,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657525303] [2021-06-12 18:53:53,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657525303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:53,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:53,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:53,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910305369] [2021-06-12 18:53:53,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:53,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:53,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:53,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:53,851 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) [2021-06-12 18:53:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:54,014 INFO L93 Difference]: Finished difference Result 993 states and 2589 transitions. [2021-06-12 18:53:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:54,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:54,015 INFO L225 Difference]: With dead ends: 993 [2021-06-12 18:53:54,015 INFO L226 Difference]: Without dead ends: 912 [2021-06-12 18:53:54,015 INFO L728 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 [2021-06-12 18:53:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-06-12 18:53:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 884. [2021-06-12 18:53:54,023 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) [2021-06-12 18:53:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2326 transitions. [2021-06-12 18:53:54,024 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2326 transitions. Word has length 26 [2021-06-12 18:53:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:54,024 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2326 transitions. [2021-06-12 18:53:54,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2326 transitions. [2021-06-12 18:53:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:54,025 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:54,025 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:54,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-12 18:53:54,025 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1236648760, now seen corresponding path program 308 times [2021-06-12 18:53:54,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:54,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851417059] [2021-06-12 18:53:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:54,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:54,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851417059] [2021-06-12 18:53:54,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851417059] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:54,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:54,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:54,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660487849] [2021-06-12 18:53:54,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:54,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:54,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:54,091 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) [2021-06-12 18:53:54,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:54,252 INFO L93 Difference]: Finished difference Result 999 states and 2604 transitions. [2021-06-12 18:53:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:54,253 INFO L225 Difference]: With dead ends: 999 [2021-06-12 18:53:54,253 INFO L226 Difference]: Without dead ends: 890 [2021-06-12 18:53:54,254 INFO L728 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 [2021-06-12 18:53:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-06-12 18:53:54,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 878. [2021-06-12 18:53:54,261 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) [2021-06-12 18:53:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-06-12 18:53:54,262 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-06-12 18:53:54,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:54,262 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-06-12 18:53:54,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-06-12 18:53:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:54,263 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:54,263 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:54,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-12 18:53:54,263 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:54,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:54,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1741509376, now seen corresponding path program 309 times [2021-06-12 18:53:54,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:54,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429775060] [2021-06-12 18:53:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:54,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:54,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429775060] [2021-06-12 18:53:54,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429775060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:54,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:54,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:54,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702816586] [2021-06-12 18:53:54,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:54,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:54,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:54,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:54,321 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) [2021-06-12 18:53:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:54,483 INFO L93 Difference]: Finished difference Result 1017 states and 2638 transitions. [2021-06-12 18:53:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:54,485 INFO L225 Difference]: With dead ends: 1017 [2021-06-12 18:53:54,485 INFO L226 Difference]: Without dead ends: 938 [2021-06-12 18:53:54,485 INFO L728 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 [2021-06-12 18:53:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-06-12 18:53:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 878. [2021-06-12 18:53:54,492 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) [2021-06-12 18:53:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-06-12 18:53:54,493 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-06-12 18:53:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:54,493 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-06-12 18:53:54,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-06-12 18:53:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:54,494 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:54,494 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:54,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-12 18:53:54,494 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:54,495 INFO L82 PathProgramCache]: Analyzing trace with hash 349364830, now seen corresponding path program 310 times [2021-06-12 18:53:54,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:54,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282115293] [2021-06-12 18:53:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:54,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:54,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282115293] [2021-06-12 18:53:54,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282115293] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:54,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:54,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:54,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119237239] [2021-06-12 18:53:54,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:54,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:54,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:54,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:54,553 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) [2021-06-12 18:53:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:54,712 INFO L93 Difference]: Finished difference Result 986 states and 2573 transitions. [2021-06-12 18:53:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:54,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:54,714 INFO L225 Difference]: With dead ends: 986 [2021-06-12 18:53:54,714 INFO L226 Difference]: Without dead ends: 900 [2021-06-12 18:53:54,714 INFO L728 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 [2021-06-12 18:53:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-06-12 18:53:54,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 871. [2021-06-12 18:53:54,722 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) [2021-06-12 18:53:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2296 transitions. [2021-06-12 18:53:54,723 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2296 transitions. Word has length 26 [2021-06-12 18:53:54,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:54,723 INFO L482 AbstractCegarLoop]: Abstraction has 871 states and 2296 transitions. [2021-06-12 18:53:54,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:54,723 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2296 transitions. [2021-06-12 18:53:54,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:54,724 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:54,724 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:54,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-12 18:53:54,724 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:54,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1139718326, now seen corresponding path program 311 times [2021-06-12 18:53:54,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:54,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724541595] [2021-06-12 18:53:54,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:54,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:54,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724541595] [2021-06-12 18:53:54,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724541595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:54,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:54,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:54,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612901366] [2021-06-12 18:53:54,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:54,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:54,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:54,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:54,791 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) [2021-06-12 18:53:54,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:54,945 INFO L93 Difference]: Finished difference Result 1044 states and 2714 transitions. [2021-06-12 18:53:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:54,945 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:54,946 INFO L225 Difference]: With dead ends: 1044 [2021-06-12 18:53:54,947 INFO L226 Difference]: Without dead ends: 907 [2021-06-12 18:53:54,947 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:54,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-06-12 18:53:54,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 883. [2021-06-12 18:53:54,954 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) [2021-06-12 18:53:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2316 transitions. [2021-06-12 18:53:54,955 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2316 transitions. Word has length 26 [2021-06-12 18:53:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:54,955 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2316 transitions. [2021-06-12 18:53:54,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2316 transitions. [2021-06-12 18:53:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:54,956 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:54,956 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:54,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-12 18:53:54,956 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:54,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:54,957 INFO L82 PathProgramCache]: Analyzing trace with hash 231467190, now seen corresponding path program 312 times [2021-06-12 18:53:54,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:54,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901137520] [2021-06-12 18:53:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:55,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:55,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901137520] [2021-06-12 18:53:55,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901137520] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:55,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:55,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:55,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911485628] [2021-06-12 18:53:55,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:55,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:55,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:55,025 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) [2021-06-12 18:53:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:55,186 INFO L93 Difference]: Finished difference Result 1036 states and 2690 transitions. [2021-06-12 18:53:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:55,186 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 [2021-06-12 18:53:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:55,188 INFO L225 Difference]: With dead ends: 1036 [2021-06-12 18:53:55,188 INFO L226 Difference]: Without dead ends: 910 [2021-06-12 18:53:55,188 INFO L728 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 [2021-06-12 18:53:55,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-06-12 18:53:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 896. [2021-06-12 18:53:55,195 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) [2021-06-12 18:53:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2337 transitions. [2021-06-12 18:53:55,196 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2337 transitions. Word has length 26 [2021-06-12 18:53:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:55,196 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2337 transitions. [2021-06-12 18:53:55,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2337 transitions. [2021-06-12 18:53:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:55,197 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:55,197 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:55,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-12 18:53:55,197 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:55,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1152043156, now seen corresponding path program 313 times [2021-06-12 18:53:55,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:55,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552106253] [2021-06-12 18:53:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:55,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:55,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552106253] [2021-06-12 18:53:55,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552106253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:55,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:55,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:55,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736929179] [2021-06-12 18:53:55,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:55,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:55,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:55,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:55,260 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) [2021-06-12 18:53:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:55,420 INFO L93 Difference]: Finished difference Result 1048 states and 2702 transitions. [2021-06-12 18:53:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:55,420 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 [2021-06-12 18:53:55,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:55,421 INFO L225 Difference]: With dead ends: 1048 [2021-06-12 18:53:55,421 INFO L226 Difference]: Without dead ends: 914 [2021-06-12 18:53:55,422 INFO L728 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 [2021-06-12 18:53:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-06-12 18:53:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 884. [2021-06-12 18:53:55,429 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) [2021-06-12 18:53:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2305 transitions. [2021-06-12 18:53:55,430 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2305 transitions. Word has length 26 [2021-06-12 18:53:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:55,430 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2305 transitions. [2021-06-12 18:53:55,430 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) [2021-06-12 18:53:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2305 transitions. [2021-06-12 18:53:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:55,431 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:55,431 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:55,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-12 18:53:55,431 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:55,431 INFO L82 PathProgramCache]: Analyzing trace with hash 622077484, now seen corresponding path program 314 times [2021-06-12 18:53:55,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:55,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029024306] [2021-06-12 18:53:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:55,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:55,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029024306] [2021-06-12 18:53:55,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029024306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:55,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:55,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:55,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125330376] [2021-06-12 18:53:55,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:55,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:55,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:55,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:55,492 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) [2021-06-12 18:53:55,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:55,649 INFO L93 Difference]: Finished difference Result 1011 states and 2623 transitions. [2021-06-12 18:53:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:55,649 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 [2021-06-12 18:53:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:55,650 INFO L225 Difference]: With dead ends: 1011 [2021-06-12 18:53:55,650 INFO L226 Difference]: Without dead ends: 865 [2021-06-12 18:53:55,650 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-06-12 18:53:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 845. [2021-06-12 18:53:55,657 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) [2021-06-12 18:53:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2216 transitions. [2021-06-12 18:53:55,658 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2216 transitions. Word has length 26 [2021-06-12 18:53:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:55,658 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2216 transitions. [2021-06-12 18:53:55,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2216 transitions. [2021-06-12 18:53:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:55,659 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:55,659 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:55,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-12 18:53:55,659 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:55,660 INFO L82 PathProgramCache]: Analyzing trace with hash -565570016, now seen corresponding path program 315 times [2021-06-12 18:53:55,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:55,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064885147] [2021-06-12 18:53:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:55,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:55,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064885147] [2021-06-12 18:53:55,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064885147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:55,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:55,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:55,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510170331] [2021-06-12 18:53:55,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:55,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:55,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:55,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:55,710 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) [2021-06-12 18:53:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:55,851 INFO L93 Difference]: Finished difference Result 978 states and 2521 transitions. [2021-06-12 18:53:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:55,851 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 [2021-06-12 18:53:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:55,852 INFO L225 Difference]: With dead ends: 978 [2021-06-12 18:53:55,852 INFO L226 Difference]: Without dead ends: 883 [2021-06-12 18:53:55,852 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-12 18:53:55,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 845. [2021-06-12 18:53:55,859 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) [2021-06-12 18:53:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2212 transitions. [2021-06-12 18:53:55,860 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2212 transitions. Word has length 26 [2021-06-12 18:53:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:55,860 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2212 transitions. [2021-06-12 18:53:55,861 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) [2021-06-12 18:53:55,861 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2212 transitions. [2021-06-12 18:53:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:55,861 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:55,861 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:55,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-12 18:53:55,862 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1715038048, now seen corresponding path program 316 times [2021-06-12 18:53:55,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:55,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835278358] [2021-06-12 18:53:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:55,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:55,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835278358] [2021-06-12 18:53:55,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835278358] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:55,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:55,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:55,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254286430] [2021-06-12 18:53:55,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:55,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:55,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:55,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:55,920 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) [2021-06-12 18:53:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:56,080 INFO L93 Difference]: Finished difference Result 986 states and 2546 transitions. [2021-06-12 18:53:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:56,080 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 [2021-06-12 18:53:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:56,081 INFO L225 Difference]: With dead ends: 986 [2021-06-12 18:53:56,081 INFO L226 Difference]: Without dead ends: 911 [2021-06-12 18:53:56,081 INFO L728 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 [2021-06-12 18:53:56,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-06-12 18:53:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 857. [2021-06-12 18:53:56,089 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) [2021-06-12 18:53:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2235 transitions. [2021-06-12 18:53:56,090 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2235 transitions. Word has length 26 [2021-06-12 18:53:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:56,090 INFO L482 AbstractCegarLoop]: Abstraction has 857 states and 2235 transitions. [2021-06-12 18:53:56,090 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) [2021-06-12 18:53:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2235 transitions. [2021-06-12 18:53:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:56,091 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:56,091 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:56,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-12 18:53:56,091 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:56,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:56,091 INFO L82 PathProgramCache]: Analyzing trace with hash -845593440, now seen corresponding path program 317 times [2021-06-12 18:53:56,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:56,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598414987] [2021-06-12 18:53:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:56,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:56,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598414987] [2021-06-12 18:53:56,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598414987] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:56,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:56,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:56,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027477819] [2021-06-12 18:53:56,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:56,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:56,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:56,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:56,152 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) [2021-06-12 18:53:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:56,315 INFO L93 Difference]: Finished difference Result 988 states and 2567 transitions. [2021-06-12 18:53:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:56,317 INFO L225 Difference]: With dead ends: 988 [2021-06-12 18:53:56,317 INFO L226 Difference]: Without dead ends: 883 [2021-06-12 18:53:56,317 INFO L728 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 [2021-06-12 18:53:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-12 18:53:56,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 852. [2021-06-12 18:53:56,324 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) [2021-06-12 18:53:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2215 transitions. [2021-06-12 18:53:56,325 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2215 transitions. Word has length 26 [2021-06-12 18:53:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:56,325 INFO L482 AbstractCegarLoop]: Abstraction has 852 states and 2215 transitions. [2021-06-12 18:53:56,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2215 transitions. [2021-06-12 18:53:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:56,330 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:56,330 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:56,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-12 18:53:56,330 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:56,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1075090430, now seen corresponding path program 318 times [2021-06-12 18:53:56,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:56,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166061129] [2021-06-12 18:53:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:56,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:56,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166061129] [2021-06-12 18:53:56,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166061129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:56,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:56,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:56,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970874471] [2021-06-12 18:53:56,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:56,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:56,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:56,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:56,391 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) [2021-06-12 18:53:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:56,551 INFO L93 Difference]: Finished difference Result 953 states and 2465 transitions. [2021-06-12 18:53:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:56,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:56,552 INFO L225 Difference]: With dead ends: 953 [2021-06-12 18:53:56,552 INFO L226 Difference]: Without dead ends: 872 [2021-06-12 18:53:56,552 INFO L728 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 [2021-06-12 18:53:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-06-12 18:53:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 856. [2021-06-12 18:53:56,559 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) [2021-06-12 18:53:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2224 transitions. [2021-06-12 18:53:56,560 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2224 transitions. Word has length 26 [2021-06-12 18:53:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:56,561 INFO L482 AbstractCegarLoop]: Abstraction has 856 states and 2224 transitions. [2021-06-12 18:53:56,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2224 transitions. [2021-06-12 18:53:56,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:56,561 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:56,562 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:56,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-12 18:53:56,562 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:56,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:56,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1099939174, now seen corresponding path program 319 times [2021-06-12 18:53:56,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:56,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635275616] [2021-06-12 18:53:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:56,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:56,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635275616] [2021-06-12 18:53:56,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635275616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:56,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:56,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:56,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491742823] [2021-06-12 18:53:56,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:56,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:56,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:56,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:56,619 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) [2021-06-12 18:53:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:56,777 INFO L93 Difference]: Finished difference Result 967 states and 2502 transitions. [2021-06-12 18:53:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:56,777 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 [2021-06-12 18:53:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:56,779 INFO L225 Difference]: With dead ends: 967 [2021-06-12 18:53:56,779 INFO L226 Difference]: Without dead ends: 864 [2021-06-12 18:53:56,779 INFO L728 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 [2021-06-12 18:53:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-06-12 18:53:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 853. [2021-06-12 18:53:56,786 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) [2021-06-12 18:53:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2218 transitions. [2021-06-12 18:53:56,787 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2218 transitions. Word has length 26 [2021-06-12 18:53:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:56,787 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2218 transitions. [2021-06-12 18:53:56,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2218 transitions. [2021-06-12 18:53:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:56,788 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:56,788 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:56,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-12 18:53:56,788 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:56,788 INFO L82 PathProgramCache]: Analyzing trace with hash -595078558, now seen corresponding path program 320 times [2021-06-12 18:53:56,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:56,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380936942] [2021-06-12 18:53:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:56,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:56,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380936942] [2021-06-12 18:53:56,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380936942] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:56,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:56,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:56,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488476195] [2021-06-12 18:53:56,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:56,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:56,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:56,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:56,846 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) [2021-06-12 18:53:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:57,007 INFO L93 Difference]: Finished difference Result 988 states and 2530 transitions. [2021-06-12 18:53:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:57,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:57,009 INFO L225 Difference]: With dead ends: 988 [2021-06-12 18:53:57,009 INFO L226 Difference]: Without dead ends: 905 [2021-06-12 18:53:57,009 INFO L728 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 [2021-06-12 18:53:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-06-12 18:53:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 849. [2021-06-12 18:53:57,016 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) [2021-06-12 18:53:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2206 transitions. [2021-06-12 18:53:57,017 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2206 transitions. Word has length 26 [2021-06-12 18:53:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:57,017 INFO L482 AbstractCegarLoop]: Abstraction has 849 states and 2206 transitions. [2021-06-12 18:53:57,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:57,017 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2206 transitions. [2021-06-12 18:53:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:57,018 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:57,018 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:57,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-12 18:53:57,018 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:57,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1987223104, now seen corresponding path program 321 times [2021-06-12 18:53:57,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:57,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345285668] [2021-06-12 18:53:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:57,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:57,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345285668] [2021-06-12 18:53:57,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345285668] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:57,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:57,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:57,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592059430] [2021-06-12 18:53:57,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:57,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:57,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:57,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:57,076 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) [2021-06-12 18:53:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:57,238 INFO L93 Difference]: Finished difference Result 951 states and 2457 transitions. [2021-06-12 18:53:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:57,238 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:57,239 INFO L225 Difference]: With dead ends: 951 [2021-06-12 18:53:57,239 INFO L226 Difference]: Without dead ends: 868 [2021-06-12 18:53:57,239 INFO L728 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 [2021-06-12 18:53:57,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-06-12 18:53:57,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 848. [2021-06-12 18:53:57,247 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) [2021-06-12 18:53:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2201 transitions. [2021-06-12 18:53:57,248 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2201 transitions. Word has length 26 [2021-06-12 18:53:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:57,248 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2201 transitions. [2021-06-12 18:53:57,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2201 transitions. [2021-06-12 18:53:57,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:57,249 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:57,249 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:57,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-12 18:53:57,249 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:57,249 INFO L82 PathProgramCache]: Analyzing trace with hash -254843420, now seen corresponding path program 322 times [2021-06-12 18:53:57,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:57,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857606847] [2021-06-12 18:53:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:57,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:57,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857606847] [2021-06-12 18:53:57,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857606847] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:57,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:57,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:57,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554867488] [2021-06-12 18:53:57,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:57,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:57,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:57,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:57,312 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) [2021-06-12 18:53:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:57,470 INFO L93 Difference]: Finished difference Result 963 states and 2484 transitions. [2021-06-12 18:53:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:57,470 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:57,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:57,471 INFO L225 Difference]: With dead ends: 963 [2021-06-12 18:53:57,471 INFO L226 Difference]: Without dead ends: 853 [2021-06-12 18:53:57,471 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-06-12 18:53:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 831. [2021-06-12 18:53:57,478 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) [2021-06-12 18:53:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2161 transitions. [2021-06-12 18:53:57,479 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2161 transitions. Word has length 26 [2021-06-12 18:53:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:57,479 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2161 transitions. [2021-06-12 18:53:57,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2161 transitions. [2021-06-12 18:53:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:57,480 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:57,480 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:57,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-12 18:53:57,480 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:57,480 INFO L82 PathProgramCache]: Analyzing trace with hash 14312340, now seen corresponding path program 323 times [2021-06-12 18:53:57,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:57,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425536410] [2021-06-12 18:53:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:57,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:57,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425536410] [2021-06-12 18:53:57,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425536410] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:57,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:57,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:57,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081886759] [2021-06-12 18:53:57,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:57,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:57,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:57,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:57,543 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) [2021-06-12 18:53:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:57,702 INFO L93 Difference]: Finished difference Result 964 states and 2472 transitions. [2021-06-12 18:53:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:57,703 INFO L225 Difference]: With dead ends: 964 [2021-06-12 18:53:57,703 INFO L226 Difference]: Without dead ends: 883 [2021-06-12 18:53:57,703 INFO L728 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 [2021-06-12 18:53:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-12 18:53:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 827. [2021-06-12 18:53:57,710 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) [2021-06-12 18:53:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2152 transitions. [2021-06-12 18:53:57,711 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2152 transitions. Word has length 26 [2021-06-12 18:53:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:57,711 INFO L482 AbstractCegarLoop]: Abstraction has 827 states and 2152 transitions. [2021-06-12 18:53:57,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2152 transitions. [2021-06-12 18:53:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:57,712 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:57,712 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:57,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-12 18:53:57,713 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:57,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2134250032, now seen corresponding path program 324 times [2021-06-12 18:53:57,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:57,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138468440] [2021-06-12 18:53:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:57,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:57,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138468440] [2021-06-12 18:53:57,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138468440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:57,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:57,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:57,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667768705] [2021-06-12 18:53:57,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:57,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:57,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:57,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:57,770 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) [2021-06-12 18:53:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:57,925 INFO L93 Difference]: Finished difference Result 932 states and 2411 transitions. [2021-06-12 18:53:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:57,926 INFO L225 Difference]: With dead ends: 932 [2021-06-12 18:53:57,926 INFO L226 Difference]: Without dead ends: 823 [2021-06-12 18:53:57,927 INFO L728 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 [2021-06-12 18:53:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-06-12 18:53:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 803. [2021-06-12 18:53:57,933 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) [2021-06-12 18:53:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2097 transitions. [2021-06-12 18:53:57,934 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2097 transitions. Word has length 26 [2021-06-12 18:53:57,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:57,934 INFO L482 AbstractCegarLoop]: Abstraction has 803 states and 2097 transitions. [2021-06-12 18:53:57,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:57,934 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2097 transitions. [2021-06-12 18:53:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:57,935 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:57,935 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:57,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-12 18:53:57,935 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:57,935 INFO L82 PathProgramCache]: Analyzing trace with hash 398343630, now seen corresponding path program 325 times [2021-06-12 18:53:57,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:57,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141537295] [2021-06-12 18:53:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:58,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:58,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141537295] [2021-06-12 18:53:58,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141537295] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:58,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:58,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:58,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034614779] [2021-06-12 18:53:58,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:58,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:58,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:58,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:58,004 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) [2021-06-12 18:53:58,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:58,159 INFO L93 Difference]: Finished difference Result 925 states and 2372 transitions. [2021-06-12 18:53:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:58,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:58,161 INFO L225 Difference]: With dead ends: 925 [2021-06-12 18:53:58,161 INFO L226 Difference]: Without dead ends: 828 [2021-06-12 18:53:58,161 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-06-12 18:53:58,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 788. [2021-06-12 18:53:58,167 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) [2021-06-12 18:53:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2053 transitions. [2021-06-12 18:53:58,168 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2053 transitions. Word has length 26 [2021-06-12 18:53:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:58,168 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2053 transitions. [2021-06-12 18:53:58,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2053 transitions. [2021-06-12 18:53:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:58,169 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:58,169 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:58,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-12 18:53:58,169 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:58,170 INFO L82 PathProgramCache]: Analyzing trace with hash 707608110, now seen corresponding path program 326 times [2021-06-12 18:53:58,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:58,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22398183] [2021-06-12 18:53:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:58,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:58,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22398183] [2021-06-12 18:53:58,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22398183] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:58,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:58,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:53:58,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924346377] [2021-06-12 18:53:58,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:53:58,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:58,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:53:58,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:58,242 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) [2021-06-12 18:53:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:58,368 INFO L93 Difference]: Finished difference Result 919 states and 2353 transitions. [2021-06-12 18:53:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:53:58,368 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 [2021-06-12 18:53:58,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:58,369 INFO L225 Difference]: With dead ends: 919 [2021-06-12 18:53:58,369 INFO L226 Difference]: Without dead ends: 826 [2021-06-12 18:53:58,369 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:53:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-06-12 18:53:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 788. [2021-06-12 18:53:58,376 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) [2021-06-12 18:53:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2049 transitions. [2021-06-12 18:53:58,377 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2049 transitions. Word has length 26 [2021-06-12 18:53:58,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:58,377 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2049 transitions. [2021-06-12 18:53:58,377 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) [2021-06-12 18:53:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2049 transitions. [2021-06-12 18:53:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:58,378 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:58,378 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:58,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-12 18:53:58,378 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:58,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1577052718, now seen corresponding path program 327 times [2021-06-12 18:53:58,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:58,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807922143] [2021-06-12 18:53:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:58,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:58,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807922143] [2021-06-12 18:53:58,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807922143] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:58,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:58,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:58,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631635166] [2021-06-12 18:53:58,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:58,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:58,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:58,436 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) [2021-06-12 18:53:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:58,587 INFO L93 Difference]: Finished difference Result 935 states and 2392 transitions. [2021-06-12 18:53:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:58,587 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:58,588 INFO L225 Difference]: With dead ends: 935 [2021-06-12 18:53:58,588 INFO L226 Difference]: Without dead ends: 666 [2021-06-12 18:53:58,588 INFO L728 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 [2021-06-12 18:53:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-06-12 18:53:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 594. [2021-06-12 18:53:58,593 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) [2021-06-12 18:53:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1515 transitions. [2021-06-12 18:53:58,594 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1515 transitions. Word has length 26 [2021-06-12 18:53:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:58,594 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1515 transitions. [2021-06-12 18:53:58,594 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) [2021-06-12 18:53:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1515 transitions. [2021-06-12 18:53:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:58,595 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:58,595 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:58,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-12 18:53:58,595 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1588992622, now seen corresponding path program 328 times [2021-06-12 18:53:58,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:58,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059098548] [2021-06-12 18:53:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:58,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:58,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059098548] [2021-06-12 18:53:58,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059098548] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:58,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:58,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:58,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867269997] [2021-06-12 18:53:58,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:58,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:58,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:58,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:58,654 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) [2021-06-12 18:53:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:58,811 INFO L93 Difference]: Finished difference Result 734 states and 1848 transitions. [2021-06-12 18:53:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:58,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:58,812 INFO L225 Difference]: With dead ends: 734 [2021-06-12 18:53:58,812 INFO L226 Difference]: Without dead ends: 633 [2021-06-12 18:53:58,812 INFO L728 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 [2021-06-12 18:53:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-06-12 18:53:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 570. [2021-06-12 18:53:58,817 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) [2021-06-12 18:53:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1457 transitions. [2021-06-12 18:53:58,817 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1457 transitions. Word has length 26 [2021-06-12 18:53:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:58,818 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1457 transitions. [2021-06-12 18:53:58,818 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) [2021-06-12 18:53:58,818 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1457 transitions. [2021-06-12 18:53:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:58,818 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:58,818 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:58,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-12 18:53:58,818 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1836530066, now seen corresponding path program 329 times [2021-06-12 18:53:58,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:58,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031702014] [2021-06-12 18:53:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:58,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:58,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031702014] [2021-06-12 18:53:58,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031702014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:58,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:58,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:58,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000360071] [2021-06-12 18:53:58,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:58,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:58,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:58,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:58,876 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) [2021-06-12 18:53:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:59,045 INFO L93 Difference]: Finished difference Result 694 states and 1767 transitions. [2021-06-12 18:53:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:59,047 INFO L225 Difference]: With dead ends: 694 [2021-06-12 18:53:59,047 INFO L226 Difference]: Without dead ends: 603 [2021-06-12 18:53:59,047 INFO L728 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 [2021-06-12 18:53:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-12 18:53:59,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 587. [2021-06-12 18:53:59,052 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) [2021-06-12 18:53:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1499 transitions. [2021-06-12 18:53:59,052 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1499 transitions. Word has length 26 [2021-06-12 18:53:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:59,052 INFO L482 AbstractCegarLoop]: Abstraction has 587 states and 1499 transitions. [2021-06-12 18:53:59,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1499 transitions. [2021-06-12 18:53:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:59,053 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:59,053 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:59,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-12 18:53:59,053 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:59,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1024327478, now seen corresponding path program 330 times [2021-06-12 18:53:59,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:59,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283012314] [2021-06-12 18:53:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:59,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:59,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283012314] [2021-06-12 18:53:59,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283012314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:59,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:59,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:59,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640092681] [2021-06-12 18:53:59,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:59,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:59,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:59,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:59,114 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) [2021-06-12 18:53:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:59,279 INFO L93 Difference]: Finished difference Result 696 states and 1770 transitions. [2021-06-12 18:53:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:59,279 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 [2021-06-12 18:53:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:59,280 INFO L225 Difference]: With dead ends: 696 [2021-06-12 18:53:59,280 INFO L226 Difference]: Without dead ends: 600 [2021-06-12 18:53:59,280 INFO L728 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 [2021-06-12 18:53:59,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-06-12 18:53:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 582. [2021-06-12 18:53:59,285 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) [2021-06-12 18:53:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1485 transitions. [2021-06-12 18:53:59,286 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1485 transitions. Word has length 26 [2021-06-12 18:53:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:59,286 INFO L482 AbstractCegarLoop]: Abstraction has 582 states and 1485 transitions. [2021-06-12 18:53:59,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1485 transitions. [2021-06-12 18:53:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:59,286 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:59,286 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:59,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-12 18:53:59,286 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:59,287 INFO L82 PathProgramCache]: Analyzing trace with hash -2053741198, now seen corresponding path program 331 times [2021-06-12 18:53:59,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:59,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961975641] [2021-06-12 18:53:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:59,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:59,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961975641] [2021-06-12 18:53:59,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961975641] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:59,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:59,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:59,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896785488] [2021-06-12 18:53:59,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:59,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:59,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:59,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:59,352 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) [2021-06-12 18:53:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:59,508 INFO L93 Difference]: Finished difference Result 709 states and 1796 transitions. [2021-06-12 18:53:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:59,509 INFO L225 Difference]: With dead ends: 709 [2021-06-12 18:53:59,509 INFO L226 Difference]: Without dead ends: 586 [2021-06-12 18:53:59,510 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-06-12 18:53:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 570. [2021-06-12 18:53:59,514 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) [2021-06-12 18:53:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1454 transitions. [2021-06-12 18:53:59,515 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1454 transitions. Word has length 26 [2021-06-12 18:53:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:59,515 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1454 transitions. [2021-06-12 18:53:59,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1454 transitions. [2021-06-12 18:53:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:59,516 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:59,516 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:59,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-12 18:53:59,516 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:59,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1380910604, now seen corresponding path program 332 times [2021-06-12 18:53:59,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:59,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167699073] [2021-06-12 18:53:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:59,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:59,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167699073] [2021-06-12 18:53:59,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167699073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:59,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:59,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:59,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478213233] [2021-06-12 18:53:59,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:59,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:59,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:59,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:59,575 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) [2021-06-12 18:53:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:59,738 INFO L93 Difference]: Finished difference Result 694 states and 1757 transitions. [2021-06-12 18:53:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:59,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:59,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:59,739 INFO L225 Difference]: With dead ends: 694 [2021-06-12 18:53:59,739 INFO L226 Difference]: Without dead ends: 613 [2021-06-12 18:53:59,740 INFO L728 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 [2021-06-12 18:53:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-12 18:53:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 569. [2021-06-12 18:53:59,744 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) [2021-06-12 18:53:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1452 transitions. [2021-06-12 18:53:59,745 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1452 transitions. Word has length 26 [2021-06-12 18:53:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:59,745 INFO L482 AbstractCegarLoop]: Abstraction has 569 states and 1452 transitions. [2021-06-12 18:53:59,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1452 transitions. [2021-06-12 18:53:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:59,746 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:59,746 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:59,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-12 18:53:59,746 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:59,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2044612084, now seen corresponding path program 333 times [2021-06-12 18:53:59,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:59,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842001788] [2021-06-12 18:53:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:59,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:59,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842001788] [2021-06-12 18:53:59,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842001788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:59,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:59,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:53:59,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138268269] [2021-06-12 18:53:59,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:53:59,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:59,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:53:59,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:53:59,804 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) [2021-06-12 18:53:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:59,972 INFO L93 Difference]: Finished difference Result 696 states and 1757 transitions. [2021-06-12 18:53:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:53:59,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:53:59,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:59,973 INFO L225 Difference]: With dead ends: 696 [2021-06-12 18:53:59,973 INFO L226 Difference]: Without dead ends: 605 [2021-06-12 18:53:59,973 INFO L728 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 [2021-06-12 18:53:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-06-12 18:53:59,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 576. [2021-06-12 18:53:59,978 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) [2021-06-12 18:53:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1469 transitions. [2021-06-12 18:53:59,979 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1469 transitions. Word has length 26 [2021-06-12 18:53:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:59,979 INFO L482 AbstractCegarLoop]: Abstraction has 576 states and 1469 transitions. [2021-06-12 18:53:59,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1469 transitions. [2021-06-12 18:53:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:53:59,979 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:59,979 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:59,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-12 18:53:59,980 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:59,980 INFO L82 PathProgramCache]: Analyzing trace with hash 794797554, now seen corresponding path program 334 times [2021-06-12 18:53:59,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:59,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389901235] [2021-06-12 18:53:59,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:00,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:00,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389901235] [2021-06-12 18:54:00,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389901235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:00,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:00,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:00,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109977411] [2021-06-12 18:54:00,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:00,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:00,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:00,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:00,041 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) [2021-06-12 18:54:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:00,203 INFO L93 Difference]: Finished difference Result 692 states and 1748 transitions. [2021-06-12 18:54:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:00,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:00,204 INFO L225 Difference]: With dead ends: 692 [2021-06-12 18:54:00,205 INFO L226 Difference]: Without dead ends: 599 [2021-06-12 18:54:00,205 INFO L728 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 [2021-06-12 18:54:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-06-12 18:54:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 572. [2021-06-12 18:54:00,209 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) [2021-06-12 18:54:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1459 transitions. [2021-06-12 18:54:00,210 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1459 transitions. Word has length 26 [2021-06-12 18:54:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:00,210 INFO L482 AbstractCegarLoop]: Abstraction has 572 states and 1459 transitions. [2021-06-12 18:54:00,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1459 transitions. [2021-06-12 18:54:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:00,211 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:00,211 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:00,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-12 18:54:00,211 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:00,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:00,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1174102638, now seen corresponding path program 335 times [2021-06-12 18:54:00,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:00,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944645710] [2021-06-12 18:54:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:00,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:00,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944645710] [2021-06-12 18:54:00,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944645710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:00,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:00,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:00,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163115608] [2021-06-12 18:54:00,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:00,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:00,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:00,268 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) [2021-06-12 18:54:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:00,430 INFO L93 Difference]: Finished difference Result 712 states and 1795 transitions. [2021-06-12 18:54:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:00,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:00,431 INFO L225 Difference]: With dead ends: 712 [2021-06-12 18:54:00,432 INFO L226 Difference]: Without dead ends: 631 [2021-06-12 18:54:00,432 INFO L728 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 [2021-06-12 18:54:00,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-06-12 18:54:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 574. [2021-06-12 18:54:00,436 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) [2021-06-12 18:54:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1469 transitions. [2021-06-12 18:54:00,437 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1469 transitions. Word has length 26 [2021-06-12 18:54:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:00,437 INFO L482 AbstractCegarLoop]: Abstraction has 574 states and 1469 transitions. [2021-06-12 18:54:00,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1469 transitions. [2021-06-12 18:54:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:00,438 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:00,438 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:00,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-12 18:54:00,438 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:00,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:00,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2043547246, now seen corresponding path program 336 times [2021-06-12 18:54:00,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:00,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600484995] [2021-06-12 18:54:00,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:00,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:00,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600484995] [2021-06-12 18:54:00,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600484995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:00,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:00,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:00,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506471255] [2021-06-12 18:54:00,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:00,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:00,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:00,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:00,495 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) [2021-06-12 18:54:00,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:00,660 INFO L93 Difference]: Finished difference Result 690 states and 1756 transitions. [2021-06-12 18:54:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:00,661 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 [2021-06-12 18:54:00,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:00,661 INFO L225 Difference]: With dead ends: 690 [2021-06-12 18:54:00,662 INFO L226 Difference]: Without dead ends: 599 [2021-06-12 18:54:00,662 INFO L728 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 [2021-06-12 18:54:00,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-06-12 18:54:00,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 577. [2021-06-12 18:54:00,666 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) [2021-06-12 18:54:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1475 transitions. [2021-06-12 18:54:00,667 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1475 transitions. Word has length 26 [2021-06-12 18:54:00,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:00,667 INFO L482 AbstractCegarLoop]: Abstraction has 577 states and 1475 transitions. [2021-06-12 18:54:00,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1475 transitions. [2021-06-12 18:54:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:00,668 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:00,668 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:00,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-12 18:54:00,668 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:00,668 INFO L82 PathProgramCache]: Analyzing trace with hash -330736180, now seen corresponding path program 337 times [2021-06-12 18:54:00,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:00,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291785708] [2021-06-12 18:54:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:00,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:00,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291785708] [2021-06-12 18:54:00,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291785708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:00,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:00,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:00,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097406480] [2021-06-12 18:54:00,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:00,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:00,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:00,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:00,726 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) [2021-06-12 18:54:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:00,882 INFO L93 Difference]: Finished difference Result 686 states and 1730 transitions. [2021-06-12 18:54:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:00,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:00,883 INFO L225 Difference]: With dead ends: 686 [2021-06-12 18:54:00,883 INFO L226 Difference]: Without dead ends: 597 [2021-06-12 18:54:00,883 INFO L728 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 [2021-06-12 18:54:00,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-06-12 18:54:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 575. [2021-06-12 18:54:00,887 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) [2021-06-12 18:54:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1467 transitions. [2021-06-12 18:54:00,888 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1467 transitions. Word has length 26 [2021-06-12 18:54:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:00,888 INFO L482 AbstractCegarLoop]: Abstraction has 575 states and 1467 transitions. [2021-06-12 18:54:00,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1467 transitions. [2021-06-12 18:54:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:00,889 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:00,889 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:00,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-12 18:54:00,889 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1789201512, now seen corresponding path program 338 times [2021-06-12 18:54:00,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:00,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605186063] [2021-06-12 18:54:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:00,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:00,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605186063] [2021-06-12 18:54:00,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605186063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:00,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:00,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:00,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400770201] [2021-06-12 18:54:00,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:00,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:00,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:00,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:00,961 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) [2021-06-12 18:54:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:01,124 INFO L93 Difference]: Finished difference Result 678 states and 1726 transitions. [2021-06-12 18:54:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:01,124 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:01,125 INFO L225 Difference]: With dead ends: 678 [2021-06-12 18:54:01,125 INFO L226 Difference]: Without dead ends: 582 [2021-06-12 18:54:01,125 INFO L728 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 [2021-06-12 18:54:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-06-12 18:54:01,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 570. [2021-06-12 18:54:01,130 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) [2021-06-12 18:54:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1455 transitions. [2021-06-12 18:54:01,130 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1455 transitions. Word has length 26 [2021-06-12 18:54:01,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:01,130 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1455 transitions. [2021-06-12 18:54:01,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:01,131 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1455 transitions. [2021-06-12 18:54:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:01,131 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:01,131 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:01,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-12 18:54:01,131 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:01,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash -268525484, now seen corresponding path program 339 times [2021-06-12 18:54:01,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:01,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651449352] [2021-06-12 18:54:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:01,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:01,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651449352] [2021-06-12 18:54:01,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651449352] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:01,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:01,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:01,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935293284] [2021-06-12 18:54:01,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:01,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:01,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:01,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:01,188 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) [2021-06-12 18:54:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:01,355 INFO L93 Difference]: Finished difference Result 701 states and 1771 transitions. [2021-06-12 18:54:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:01,355 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 [2021-06-12 18:54:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:01,356 INFO L225 Difference]: With dead ends: 701 [2021-06-12 18:54:01,356 INFO L226 Difference]: Without dead ends: 610 [2021-06-12 18:54:01,356 INFO L728 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 [2021-06-12 18:54:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-06-12 18:54:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 585. [2021-06-12 18:54:01,361 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) [2021-06-12 18:54:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1488 transitions. [2021-06-12 18:54:01,361 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1488 transitions. Word has length 26 [2021-06-12 18:54:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:01,362 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1488 transitions. [2021-06-12 18:54:01,362 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) [2021-06-12 18:54:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1488 transitions. [2021-06-12 18:54:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:01,362 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:01,362 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:01,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-12 18:54:01,362 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:01,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1660670030, now seen corresponding path program 340 times [2021-06-12 18:54:01,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:01,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338460253] [2021-06-12 18:54:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:01,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:01,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338460253] [2021-06-12 18:54:01,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338460253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:01,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:01,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:01,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134328853] [2021-06-12 18:54:01,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:01,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:01,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:01,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:01,420 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) [2021-06-12 18:54:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:01,580 INFO L93 Difference]: Finished difference Result 693 states and 1757 transitions. [2021-06-12 18:54:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:01,580 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 [2021-06-12 18:54:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:01,581 INFO L225 Difference]: With dead ends: 693 [2021-06-12 18:54:01,581 INFO L226 Difference]: Without dead ends: 596 [2021-06-12 18:54:01,581 INFO L728 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 [2021-06-12 18:54:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-06-12 18:54:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 583. [2021-06-12 18:54:01,586 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) [2021-06-12 18:54:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1483 transitions. [2021-06-12 18:54:01,586 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1483 transitions. Word has length 26 [2021-06-12 18:54:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:01,586 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1483 transitions. [2021-06-12 18:54:01,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1483 transitions. [2021-06-12 18:54:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:01,587 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:01,587 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:01,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-12 18:54:01,587 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:01,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1725450056, now seen corresponding path program 341 times [2021-06-12 18:54:01,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:01,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332786626] [2021-06-12 18:54:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:01,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:01,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332786626] [2021-06-12 18:54:01,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332786626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:01,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:01,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:01,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19100952] [2021-06-12 18:54:01,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:01,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:01,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:01,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:01,645 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) [2021-06-12 18:54:01,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:01,799 INFO L93 Difference]: Finished difference Result 728 states and 1837 transitions. [2021-06-12 18:54:01,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:01,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:01,800 INFO L225 Difference]: With dead ends: 728 [2021-06-12 18:54:01,800 INFO L226 Difference]: Without dead ends: 613 [2021-06-12 18:54:01,800 INFO L728 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 [2021-06-12 18:54:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-12 18:54:01,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 583. [2021-06-12 18:54:01,805 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) [2021-06-12 18:54:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-06-12 18:54:01,806 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-06-12 18:54:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:01,806 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-06-12 18:54:01,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-06-12 18:54:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:01,806 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:01,807 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:01,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-12 18:54:01,807 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:01,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1329303574, now seen corresponding path program 342 times [2021-06-12 18:54:01,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:01,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300615795] [2021-06-12 18:54:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:01,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:01,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300615795] [2021-06-12 18:54:01,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300615795] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:01,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:01,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:01,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158983883] [2021-06-12 18:54:01,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:01,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:01,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:01,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:01,863 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) [2021-06-12 18:54:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:02,026 INFO L93 Difference]: Finished difference Result 717 states and 1804 transitions. [2021-06-12 18:54:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:02,026 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 [2021-06-12 18:54:02,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:02,027 INFO L225 Difference]: With dead ends: 717 [2021-06-12 18:54:02,027 INFO L226 Difference]: Without dead ends: 626 [2021-06-12 18:54:02,027 INFO L728 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 [2021-06-12 18:54:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-06-12 18:54:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 583. [2021-06-12 18:54:02,032 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) [2021-06-12 18:54:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-06-12 18:54:02,032 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-06-12 18:54:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:02,032 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-06-12 18:54:02,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-06-12 18:54:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:02,033 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:02,033 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:02,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-12 18:54:02,033 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:02,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1573519176, now seen corresponding path program 343 times [2021-06-12 18:54:02,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:02,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479888635] [2021-06-12 18:54:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:02,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:02,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479888635] [2021-06-12 18:54:02,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479888635] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:02,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:02,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:02,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617367090] [2021-06-12 18:54:02,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:02,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:02,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:02,094 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) [2021-06-12 18:54:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:02,262 INFO L93 Difference]: Finished difference Result 697 states and 1755 transitions. [2021-06-12 18:54:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:02,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:02,264 INFO L225 Difference]: With dead ends: 697 [2021-06-12 18:54:02,264 INFO L226 Difference]: Without dead ends: 590 [2021-06-12 18:54:02,264 INFO L728 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 [2021-06-12 18:54:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-06-12 18:54:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 566. [2021-06-12 18:54:02,268 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) [2021-06-12 18:54:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1427 transitions. [2021-06-12 18:54:02,269 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1427 transitions. Word has length 26 [2021-06-12 18:54:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:02,269 INFO L482 AbstractCegarLoop]: Abstraction has 566 states and 1427 transitions. [2021-06-12 18:54:02,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1427 transitions. [2021-06-12 18:54:02,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:02,270 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:02,270 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:02,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-12 18:54:02,270 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:02,270 INFO L82 PathProgramCache]: Analyzing trace with hash -360912488, now seen corresponding path program 344 times [2021-06-12 18:54:02,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:02,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470826746] [2021-06-12 18:54:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:02,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:02,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470826746] [2021-06-12 18:54:02,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470826746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:02,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:02,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:02,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532795748] [2021-06-12 18:54:02,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:02,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:02,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:02,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:02,330 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) [2021-06-12 18:54:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:02,486 INFO L93 Difference]: Finished difference Result 710 states and 1782 transitions. [2021-06-12 18:54:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:02,488 INFO L225 Difference]: With dead ends: 710 [2021-06-12 18:54:02,488 INFO L226 Difference]: Without dead ends: 593 [2021-06-12 18:54:02,488 INFO L728 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 [2021-06-12 18:54:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-06-12 18:54:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-06-12 18:54:02,493 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) [2021-06-12 18:54:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1481 transitions. [2021-06-12 18:54:02,493 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1481 transitions. Word has length 26 [2021-06-12 18:54:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:02,493 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1481 transitions. [2021-06-12 18:54:02,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1481 transitions. [2021-06-12 18:54:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:02,494 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:02,494 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:02,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-12 18:54:02,494 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:02,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:02,494 INFO L82 PathProgramCache]: Analyzing trace with hash 451290100, now seen corresponding path program 345 times [2021-06-12 18:54:02,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:02,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451333772] [2021-06-12 18:54:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:02,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:02,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451333772] [2021-06-12 18:54:02,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451333772] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:02,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:02,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:02,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489003236] [2021-06-12 18:54:02,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:02,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:02,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:02,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:02,551 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) [2021-06-12 18:54:02,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:02,705 INFO L93 Difference]: Finished difference Result 725 states and 1802 transitions. [2021-06-12 18:54:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:02,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:02,706 INFO L225 Difference]: With dead ends: 725 [2021-06-12 18:54:02,706 INFO L226 Difference]: Without dead ends: 603 [2021-06-12 18:54:02,706 INFO L728 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 [2021-06-12 18:54:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-12 18:54:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2021-06-12 18:54:02,711 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) [2021-06-12 18:54:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1478 transitions. [2021-06-12 18:54:02,712 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1478 transitions. Word has length 26 [2021-06-12 18:54:02,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:02,712 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1478 transitions. [2021-06-12 18:54:02,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1478 transitions. [2021-06-12 18:54:02,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:02,713 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:02,713 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:02,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-12 18:54:02,713 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:02,713 INFO L82 PathProgramCache]: Analyzing trace with hash -578123620, now seen corresponding path program 346 times [2021-06-12 18:54:02,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:02,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706108580] [2021-06-12 18:54:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:02,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:02,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706108580] [2021-06-12 18:54:02,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706108580] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:02,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:02,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:02,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796134915] [2021-06-12 18:54:02,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:02,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:02,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:02,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:02,769 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) [2021-06-12 18:54:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:02,918 INFO L93 Difference]: Finished difference Result 740 states and 1834 transitions. [2021-06-12 18:54:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:02,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:02,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:02,919 INFO L225 Difference]: With dead ends: 740 [2021-06-12 18:54:02,919 INFO L226 Difference]: Without dead ends: 591 [2021-06-12 18:54:02,919 INFO L728 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 [2021-06-12 18:54:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-06-12 18:54:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2021-06-12 18:54:02,924 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) [2021-06-12 18:54:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1442 transitions. [2021-06-12 18:54:02,924 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1442 transitions. Word has length 26 [2021-06-12 18:54:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:02,924 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1442 transitions. [2021-06-12 18:54:02,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1442 transitions. [2021-06-12 18:54:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:02,925 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:02,925 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:02,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-12 18:54:02,925 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:02,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:02,925 INFO L82 PathProgramCache]: Analyzing trace with hash 93437880, now seen corresponding path program 347 times [2021-06-12 18:54:02,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:02,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35653568] [2021-06-12 18:54:02,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:02,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:02,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35653568] [2021-06-12 18:54:02,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35653568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:02,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:02,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:02,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334794879] [2021-06-12 18:54:02,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:02,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:02,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:02,981 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) [2021-06-12 18:54:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:03,137 INFO L93 Difference]: Finished difference Result 702 states and 1738 transitions. [2021-06-12 18:54:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:03,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:03,138 INFO L225 Difference]: With dead ends: 702 [2021-06-12 18:54:03,138 INFO L226 Difference]: Without dead ends: 558 [2021-06-12 18:54:03,138 INFO L728 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 [2021-06-12 18:54:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-06-12 18:54:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 542. [2021-06-12 18:54:03,142 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) [2021-06-12 18:54:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1349 transitions. [2021-06-12 18:54:03,143 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1349 transitions. Word has length 26 [2021-06-12 18:54:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:03,143 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1349 transitions. [2021-06-12 18:54:03,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1349 transitions. [2021-06-12 18:54:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:03,144 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:03,144 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:03,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-12 18:54:03,144 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:03,144 INFO L82 PathProgramCache]: Analyzing trace with hash 99116926, now seen corresponding path program 348 times [2021-06-12 18:54:03,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:03,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066574421] [2021-06-12 18:54:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:03,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:03,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066574421] [2021-06-12 18:54:03,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066574421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:03,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:03,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:03,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418987233] [2021-06-12 18:54:03,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:03,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:03,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:03,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:03,202 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) [2021-06-12 18:54:03,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:03,368 INFO L93 Difference]: Finished difference Result 644 states and 1595 transitions. [2021-06-12 18:54:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:03,368 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 [2021-06-12 18:54:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:03,369 INFO L225 Difference]: With dead ends: 644 [2021-06-12 18:54:03,369 INFO L226 Difference]: Without dead ends: 561 [2021-06-12 18:54:03,369 INFO L728 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 [2021-06-12 18:54:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-06-12 18:54:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 530. [2021-06-12 18:54:03,373 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) [2021-06-12 18:54:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1306 transitions. [2021-06-12 18:54:03,374 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1306 transitions. Word has length 26 [2021-06-12 18:54:03,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:03,374 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1306 transitions. [2021-06-12 18:54:03,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1306 transitions. [2021-06-12 18:54:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:03,375 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:03,375 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:03,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-12 18:54:03,375 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:03,375 INFO L82 PathProgramCache]: Analyzing trace with hash 968561534, now seen corresponding path program 349 times [2021-06-12 18:54:03,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:03,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914971430] [2021-06-12 18:54:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:03,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:03,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914971430] [2021-06-12 18:54:03,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914971430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:03,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:03,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:03,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922077208] [2021-06-12 18:54:03,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:03,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:03,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:03,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:03,454 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) [2021-06-12 18:54:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:03,622 INFO L93 Difference]: Finished difference Result 663 states and 1624 transitions. [2021-06-12 18:54:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:03,622 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 [2021-06-12 18:54:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:03,623 INFO L225 Difference]: With dead ends: 663 [2021-06-12 18:54:03,623 INFO L226 Difference]: Without dead ends: 572 [2021-06-12 18:54:03,623 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:03,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-06-12 18:54:03,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 536. [2021-06-12 18:54:03,627 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) [2021-06-12 18:54:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1315 transitions. [2021-06-12 18:54:03,628 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1315 transitions. Word has length 26 [2021-06-12 18:54:03,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:03,628 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1315 transitions. [2021-06-12 18:54:03,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1315 transitions. [2021-06-12 18:54:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:03,629 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:03,629 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:03,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-12 18:54:03,629 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:03,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1405721892, now seen corresponding path program 350 times [2021-06-12 18:54:03,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:03,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158084916] [2021-06-12 18:54:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:03,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:03,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158084916] [2021-06-12 18:54:03,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158084916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:03,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:03,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:03,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809102008] [2021-06-12 18:54:03,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:03,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:03,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:03,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:03,688 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) [2021-06-12 18:54:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:03,850 INFO L93 Difference]: Finished difference Result 635 states and 1558 transitions. [2021-06-12 18:54:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:03,850 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 [2021-06-12 18:54:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:03,851 INFO L225 Difference]: With dead ends: 635 [2021-06-12 18:54:03,851 INFO L226 Difference]: Without dead ends: 550 [2021-06-12 18:54:03,851 INFO L728 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 [2021-06-12 18:54:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-06-12 18:54:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 539. [2021-06-12 18:54:03,855 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) [2021-06-12 18:54:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1320 transitions. [2021-06-12 18:54:03,856 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1320 transitions. Word has length 26 [2021-06-12 18:54:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:03,856 INFO L482 AbstractCegarLoop]: Abstraction has 539 states and 1320 transitions. [2021-06-12 18:54:03,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1320 transitions. [2021-06-12 18:54:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:03,856 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:03,857 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:03,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-12 18:54:03,857 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash 714215800, now seen corresponding path program 351 times [2021-06-12 18:54:03,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:03,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984654778] [2021-06-12 18:54:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:03,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:03,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984654778] [2021-06-12 18:54:03,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984654778] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:03,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:03,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:03,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140186302] [2021-06-12 18:54:03,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:03,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:03,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:03,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:03,918 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) [2021-06-12 18:54:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:04,085 INFO L93 Difference]: Finished difference Result 642 states and 1579 transitions. [2021-06-12 18:54:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:04,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:04,086 INFO L225 Difference]: With dead ends: 642 [2021-06-12 18:54:04,086 INFO L226 Difference]: Without dead ends: 546 [2021-06-12 18:54:04,087 INFO L728 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 [2021-06-12 18:54:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-12 18:54:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 536. [2021-06-12 18:54:04,091 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) [2021-06-12 18:54:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1314 transitions. [2021-06-12 18:54:04,092 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1314 transitions. Word has length 26 [2021-06-12 18:54:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:04,092 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1314 transitions. [2021-06-12 18:54:04,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1314 transitions. [2021-06-12 18:54:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:04,092 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:04,092 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:04,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-12 18:54:04,092 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:04,093 INFO L82 PathProgramCache]: Analyzing trace with hash -173068130, now seen corresponding path program 352 times [2021-06-12 18:54:04,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:04,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779906874] [2021-06-12 18:54:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:04,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:04,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779906874] [2021-06-12 18:54:04,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779906874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:04,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:04,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:04,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353663169] [2021-06-12 18:54:04,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:04,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:04,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:04,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:04,151 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) [2021-06-12 18:54:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:04,308 INFO L93 Difference]: Finished difference Result 646 states and 1576 transitions. [2021-06-12 18:54:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:04,309 INFO L225 Difference]: With dead ends: 646 [2021-06-12 18:54:04,309 INFO L226 Difference]: Without dead ends: 559 [2021-06-12 18:54:04,309 INFO L728 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 [2021-06-12 18:54:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-06-12 18:54:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 530. [2021-06-12 18:54:04,314 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) [2021-06-12 18:54:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-06-12 18:54:04,314 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-06-12 18:54:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:04,314 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-06-12 18:54:04,314 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) [2021-06-12 18:54:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-06-12 18:54:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:04,315 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:04,315 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:04,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-12 18:54:04,315 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:04,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1343511196, now seen corresponding path program 353 times [2021-06-12 18:54:04,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:04,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218503181] [2021-06-12 18:54:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:04,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:04,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218503181] [2021-06-12 18:54:04,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218503181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:04,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:04,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:04,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080775730] [2021-06-12 18:54:04,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:04,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:04,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:04,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:04,378 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) [2021-06-12 18:54:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:04,550 INFO L93 Difference]: Finished difference Result 658 states and 1602 transitions. [2021-06-12 18:54:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:04,551 INFO L225 Difference]: With dead ends: 658 [2021-06-12 18:54:04,551 INFO L226 Difference]: Without dead ends: 567 [2021-06-12 18:54:04,551 INFO L728 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 [2021-06-12 18:54:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-06-12 18:54:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 530. [2021-06-12 18:54:04,556 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) [2021-06-12 18:54:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-06-12 18:54:04,556 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-06-12 18:54:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:04,556 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-06-12 18:54:04,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-06-12 18:54:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:04,557 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:04,557 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:04,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-12 18:54:04,557 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:04,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1559311554, now seen corresponding path program 354 times [2021-06-12 18:54:04,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:04,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695659992] [2021-06-12 18:54:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:04,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:04,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695659992] [2021-06-12 18:54:04,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695659992] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:04,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:04,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:04,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615800956] [2021-06-12 18:54:04,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:04,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:04,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:04,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:04,628 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) [2021-06-12 18:54:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:04,790 INFO L93 Difference]: Finished difference Result 638 states and 1564 transitions. [2021-06-12 18:54:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:04,791 INFO L225 Difference]: With dead ends: 638 [2021-06-12 18:54:04,791 INFO L226 Difference]: Without dead ends: 541 [2021-06-12 18:54:04,791 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-06-12 18:54:04,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 528. [2021-06-12 18:54:04,795 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) [2021-06-12 18:54:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1290 transitions. [2021-06-12 18:54:04,796 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1290 transitions. Word has length 26 [2021-06-12 18:54:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:04,796 INFO L482 AbstractCegarLoop]: Abstraction has 528 states and 1290 transitions. [2021-06-12 18:54:04,796 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) [2021-06-12 18:54:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1290 transitions. [2021-06-12 18:54:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:04,796 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:04,796 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:04,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-12 18:54:04,797 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1828467314, now seen corresponding path program 355 times [2021-06-12 18:54:04,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:04,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597920823] [2021-06-12 18:54:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:04,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:04,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597920823] [2021-06-12 18:54:04,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597920823] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:04,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:04,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:04,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145740673] [2021-06-12 18:54:04,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:04,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:04,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:04,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:04,855 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) [2021-06-12 18:54:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:05,011 INFO L93 Difference]: Finished difference Result 621 states and 1513 transitions. [2021-06-12 18:54:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:05,011 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 [2021-06-12 18:54:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:05,012 INFO L225 Difference]: With dead ends: 621 [2021-06-12 18:54:05,012 INFO L226 Difference]: Without dead ends: 536 [2021-06-12 18:54:05,012 INFO L728 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 [2021-06-12 18:54:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-06-12 18:54:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 516. [2021-06-12 18:54:05,016 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) [2021-06-12 18:54:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1260 transitions. [2021-06-12 18:54:05,017 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1260 transitions. Word has length 26 [2021-06-12 18:54:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:05,017 INFO L482 AbstractCegarLoop]: Abstraction has 516 states and 1260 transitions. [2021-06-12 18:54:05,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1260 transitions. [2021-06-12 18:54:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:05,018 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:05,018 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:05,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-12 18:54:05,018 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:05,018 INFO L82 PathProgramCache]: Analyzing trace with hash -346562290, now seen corresponding path program 356 times [2021-06-12 18:54:05,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:05,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143497097] [2021-06-12 18:54:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:05,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:05,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143497097] [2021-06-12 18:54:05,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143497097] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:05,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:05,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:05,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432147809] [2021-06-12 18:54:05,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:05,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:05,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:05,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:05,079 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) [2021-06-12 18:54:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:05,241 INFO L93 Difference]: Finished difference Result 643 states and 1566 transitions. [2021-06-12 18:54:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:05,242 INFO L225 Difference]: With dead ends: 643 [2021-06-12 18:54:05,242 INFO L226 Difference]: Without dead ends: 541 [2021-06-12 18:54:05,242 INFO L728 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 [2021-06-12 18:54:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-06-12 18:54:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 501. [2021-06-12 18:54:05,246 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) [2021-06-12 18:54:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1231 transitions. [2021-06-12 18:54:05,246 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1231 transitions. Word has length 26 [2021-06-12 18:54:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:05,247 INFO L482 AbstractCegarLoop]: Abstraction has 501 states and 1231 transitions. [2021-06-12 18:54:05,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1231 transitions. [2021-06-12 18:54:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:05,247 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:05,247 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:05,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-12 18:54:05,247 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1198711480, now seen corresponding path program 357 times [2021-06-12 18:54:05,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:05,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396557470] [2021-06-12 18:54:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:05,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:05,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396557470] [2021-06-12 18:54:05,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396557470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:05,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:05,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:05,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751290918] [2021-06-12 18:54:05,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:05,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:05,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:05,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:05,311 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) [2021-06-12 18:54:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:05,474 INFO L93 Difference]: Finished difference Result 600 states and 1466 transitions. [2021-06-12 18:54:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:05,475 INFO L225 Difference]: With dead ends: 600 [2021-06-12 18:54:05,475 INFO L226 Difference]: Without dead ends: 459 [2021-06-12 18:54:05,475 INFO L728 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 [2021-06-12 18:54:05,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-06-12 18:54:05,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 419. [2021-06-12 18:54:05,479 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) [2021-06-12 18:54:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1031 transitions. [2021-06-12 18:54:05,479 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1031 transitions. Word has length 26 [2021-06-12 18:54:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:05,479 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1031 transitions. [2021-06-12 18:54:05,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1031 transitions. [2021-06-12 18:54:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:05,480 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:05,480 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:05,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-12 18:54:05,480 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:05,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:05,480 INFO L82 PathProgramCache]: Analyzing trace with hash 323941484, now seen corresponding path program 358 times [2021-06-12 18:54:05,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:05,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491052450] [2021-06-12 18:54:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:05,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:05,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491052450] [2021-06-12 18:54:05,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491052450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:05,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:05,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:05,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428725004] [2021-06-12 18:54:05,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:05,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:05,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:05,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:05,538 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) [2021-06-12 18:54:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:05,689 INFO L93 Difference]: Finished difference Result 544 states and 1325 transitions. [2021-06-12 18:54:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:05,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:05,690 INFO L225 Difference]: With dead ends: 544 [2021-06-12 18:54:05,690 INFO L226 Difference]: Without dead ends: 423 [2021-06-12 18:54:05,690 INFO L728 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 [2021-06-12 18:54:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-06-12 18:54:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2021-06-12 18:54:05,694 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) [2021-06-12 18:54:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1021 transitions. [2021-06-12 18:54:05,694 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1021 transitions. Word has length 26 [2021-06-12 18:54:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:05,694 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1021 transitions. [2021-06-12 18:54:05,695 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) [2021-06-12 18:54:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1021 transitions. [2021-06-12 18:54:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:05,695 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:05,695 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:05,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-12 18:54:05,695 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:05,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2082614990, now seen corresponding path program 359 times [2021-06-12 18:54:05,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:05,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782623324] [2021-06-12 18:54:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:05,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:05,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782623324] [2021-06-12 18:54:05,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782623324] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:05,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:05,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:05,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145993226] [2021-06-12 18:54:05,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:05,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:05,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:05,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:05,755 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) [2021-06-12 18:54:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:05,902 INFO L93 Difference]: Finished difference Result 545 states and 1321 transitions. [2021-06-12 18:54:05,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:05,902 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 [2021-06-12 18:54:05,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:05,903 INFO L225 Difference]: With dead ends: 545 [2021-06-12 18:54:05,903 INFO L226 Difference]: Without dead ends: 429 [2021-06-12 18:54:05,903 INFO L728 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 [2021-06-12 18:54:05,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-06-12 18:54:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 423. [2021-06-12 18:54:05,906 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) [2021-06-12 18:54:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1028 transitions. [2021-06-12 18:54:05,907 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1028 transitions. Word has length 26 [2021-06-12 18:54:05,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:05,907 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1028 transitions. [2021-06-12 18:54:05,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1028 transitions. [2021-06-12 18:54:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:05,907 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:05,907 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:05,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-12 18:54:05,908 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1483348368, now seen corresponding path program 360 times [2021-06-12 18:54:05,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:05,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631645014] [2021-06-12 18:54:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:05,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:05,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631645014] [2021-06-12 18:54:05,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631645014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:05,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:05,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:05,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485718190] [2021-06-12 18:54:05,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:05,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:05,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:05,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:05,978 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) [2021-06-12 18:54:06,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:06,131 INFO L93 Difference]: Finished difference Result 536 states and 1302 transitions. [2021-06-12 18:54:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:06,132 INFO L225 Difference]: With dead ends: 536 [2021-06-12 18:54:06,132 INFO L226 Difference]: Without dead ends: 417 [2021-06-12 18:54:06,132 INFO L728 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 [2021-06-12 18:54:06,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-06-12 18:54:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2021-06-12 18:54:06,135 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) [2021-06-12 18:54:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1001 transitions. [2021-06-12 18:54:06,136 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1001 transitions. Word has length 26 [2021-06-12 18:54:06,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:06,136 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 1001 transitions. [2021-06-12 18:54:06,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1001 transitions. [2021-06-12 18:54:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:06,136 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:06,136 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:06,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-12 18:54:06,137 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1622263662, now seen corresponding path program 361 times [2021-06-12 18:54:06,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:06,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467437636] [2021-06-12 18:54:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:06,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:06,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467437636] [2021-06-12 18:54:06,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467437636] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:06,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:06,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:54:06,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484949342] [2021-06-12 18:54:06,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:54:06,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:06,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:54:06,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:54:06,194 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) [2021-06-12 18:54:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:06,308 INFO L93 Difference]: Finished difference Result 541 states and 1317 transitions. [2021-06-12 18:54:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:54:06,309 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 [2021-06-12 18:54:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:06,309 INFO L225 Difference]: With dead ends: 541 [2021-06-12 18:54:06,309 INFO L226 Difference]: Without dead ends: 430 [2021-06-12 18:54:06,309 INFO L728 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 [2021-06-12 18:54:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-12 18:54:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 426. [2021-06-12 18:54:06,313 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) [2021-06-12 18:54:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1032 transitions. [2021-06-12 18:54:06,313 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1032 transitions. Word has length 26 [2021-06-12 18:54:06,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:06,313 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1032 transitions. [2021-06-12 18:54:06,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1032 transitions. [2021-06-12 18:54:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:06,314 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:06,314 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:06,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-12 18:54:06,314 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:06,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1764452498, now seen corresponding path program 362 times [2021-06-12 18:54:06,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:06,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442748455] [2021-06-12 18:54:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:06,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:06,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442748455] [2021-06-12 18:54:06,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442748455] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:06,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:06,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:54:06,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469456562] [2021-06-12 18:54:06,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:54:06,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:06,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:54:06,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:54:06,362 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) [2021-06-12 18:54:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:06,476 INFO L93 Difference]: Finished difference Result 544 states and 1316 transitions. [2021-06-12 18:54:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:54:06,477 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 [2021-06-12 18:54:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:06,477 INFO L225 Difference]: With dead ends: 544 [2021-06-12 18:54:06,477 INFO L226 Difference]: Without dead ends: 444 [2021-06-12 18:54:06,477 INFO L728 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 [2021-06-12 18:54:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-06-12 18:54:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 431. [2021-06-12 18:54:06,481 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) [2021-06-12 18:54:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1043 transitions. [2021-06-12 18:54:06,481 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1043 transitions. Word has length 26 [2021-06-12 18:54:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:06,482 INFO L482 AbstractCegarLoop]: Abstraction has 431 states and 1043 transitions. [2021-06-12 18:54:06,482 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) [2021-06-12 18:54:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1043 transitions. [2021-06-12 18:54:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:06,482 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:06,482 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:06,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-12 18:54:06,482 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:06,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:06,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1609938832, now seen corresponding path program 363 times [2021-06-12 18:54:06,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:06,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395382812] [2021-06-12 18:54:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:06,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:06,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395382812] [2021-06-12 18:54:06,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395382812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:06,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:06,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:54:06,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833274542] [2021-06-12 18:54:06,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:54:06,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:06,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:54:06,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:54:06,530 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) [2021-06-12 18:54:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:06,651 INFO L93 Difference]: Finished difference Result 539 states and 1307 transitions. [2021-06-12 18:54:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:54:06,652 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 [2021-06-12 18:54:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:06,652 INFO L225 Difference]: With dead ends: 539 [2021-06-12 18:54:06,652 INFO L226 Difference]: Without dead ends: 431 [2021-06-12 18:54:06,652 INFO L728 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 [2021-06-12 18:54:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-06-12 18:54:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2021-06-12 18:54:06,656 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) [2021-06-12 18:54:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1010 transitions. [2021-06-12 18:54:06,656 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1010 transitions. Word has length 26 [2021-06-12 18:54:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:06,657 INFO L482 AbstractCegarLoop]: Abstraction has 414 states and 1010 transitions. [2021-06-12 18:54:06,657 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) [2021-06-12 18:54:06,657 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1010 transitions. [2021-06-12 18:54:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:06,657 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:06,657 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:06,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-12 18:54:06,657 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833742, now seen corresponding path program 364 times [2021-06-12 18:54:06,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:06,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793214333] [2021-06-12 18:54:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:06,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:06,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793214333] [2021-06-12 18:54:06,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793214333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:06,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:06,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:06,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681576845] [2021-06-12 18:54:06,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:06,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:06,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:06,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:06,714 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) [2021-06-12 18:54:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:06,865 INFO L93 Difference]: Finished difference Result 552 states and 1354 transitions. [2021-06-12 18:54:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:06,865 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 [2021-06-12 18:54:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:06,866 INFO L225 Difference]: With dead ends: 552 [2021-06-12 18:54:06,866 INFO L226 Difference]: Without dead ends: 447 [2021-06-12 18:54:06,866 INFO L728 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 [2021-06-12 18:54:06,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-06-12 18:54:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 426. [2021-06-12 18:54:06,869 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) [2021-06-12 18:54:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1049 transitions. [2021-06-12 18:54:06,870 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1049 transitions. Word has length 26 [2021-06-12 18:54:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:06,870 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1049 transitions. [2021-06-12 18:54:06,870 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) [2021-06-12 18:54:06,870 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1049 transitions. [2021-06-12 18:54:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:06,871 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:06,871 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:06,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-12 18:54:06,871 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:06,871 INFO L82 PathProgramCache]: Analyzing trace with hash -331419052, now seen corresponding path program 365 times [2021-06-12 18:54:06,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:06,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062221390] [2021-06-12 18:54:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:06,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:06,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062221390] [2021-06-12 18:54:06,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062221390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:06,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:06,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:06,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178613592] [2021-06-12 18:54:06,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:06,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:06,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:06,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:06,937 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) [2021-06-12 18:54:07,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:07,084 INFO L93 Difference]: Finished difference Result 587 states and 1441 transitions. [2021-06-12 18:54:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:07,085 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:07,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:07,085 INFO L225 Difference]: With dead ends: 587 [2021-06-12 18:54:07,085 INFO L226 Difference]: Without dead ends: 454 [2021-06-12 18:54:07,085 INFO L728 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 [2021-06-12 18:54:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-06-12 18:54:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 438. [2021-06-12 18:54:07,089 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) [2021-06-12 18:54:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1076 transitions. [2021-06-12 18:54:07,089 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1076 transitions. Word has length 26 [2021-06-12 18:54:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:07,090 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1076 transitions. [2021-06-12 18:54:07,090 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) [2021-06-12 18:54:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1076 transitions. [2021-06-12 18:54:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:07,090 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:07,090 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:07,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-12 18:54:07,090 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:07,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2118876052, now seen corresponding path program 366 times [2021-06-12 18:54:07,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:07,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919925803] [2021-06-12 18:54:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:07,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:07,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919925803] [2021-06-12 18:54:07,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919925803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:07,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:07,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:07,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005247835] [2021-06-12 18:54:07,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:07,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:07,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:07,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:07,149 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) [2021-06-12 18:54:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:07,307 INFO L93 Difference]: Finished difference Result 557 states and 1384 transitions. [2021-06-12 18:54:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:07,307 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 [2021-06-12 18:54:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:07,307 INFO L225 Difference]: With dead ends: 557 [2021-06-12 18:54:07,307 INFO L226 Difference]: Without dead ends: 460 [2021-06-12 18:54:07,308 INFO L728 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 [2021-06-12 18:54:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-12 18:54:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 443. [2021-06-12 18:54:07,311 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) [2021-06-12 18:54:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1091 transitions. [2021-06-12 18:54:07,312 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1091 transitions. Word has length 26 [2021-06-12 18:54:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:07,312 INFO L482 AbstractCegarLoop]: Abstraction has 443 states and 1091 transitions. [2021-06-12 18:54:07,312 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) [2021-06-12 18:54:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1091 transitions. [2021-06-12 18:54:07,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:07,312 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:07,312 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:07,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-12 18:54:07,313 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:07,313 INFO L82 PathProgramCache]: Analyzing trace with hash 607162702, now seen corresponding path program 367 times [2021-06-12 18:54:07,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:07,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337316895] [2021-06-12 18:54:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:07,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:07,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337316895] [2021-06-12 18:54:07,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337316895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:07,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:07,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:07,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96509247] [2021-06-12 18:54:07,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:07,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:07,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:07,372 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) [2021-06-12 18:54:07,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:07,523 INFO L93 Difference]: Finished difference Result 553 states and 1364 transitions. [2021-06-12 18:54:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:07,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:07,523 INFO L225 Difference]: With dead ends: 553 [2021-06-12 18:54:07,524 INFO L226 Difference]: Without dead ends: 448 [2021-06-12 18:54:07,524 INFO L728 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 [2021-06-12 18:54:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-06-12 18:54:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 426. [2021-06-12 18:54:07,527 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) [2021-06-12 18:54:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1039 transitions. [2021-06-12 18:54:07,528 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1039 transitions. Word has length 26 [2021-06-12 18:54:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:07,528 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1039 transitions. [2021-06-12 18:54:07,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1039 transitions. [2021-06-12 18:54:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:07,528 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:07,528 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:07,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-12 18:54:07,529 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:07,529 INFO L82 PathProgramCache]: Analyzing trace with hash 860847822, now seen corresponding path program 368 times [2021-06-12 18:54:07,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:07,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827748753] [2021-06-12 18:54:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:07,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:07,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827748753] [2021-06-12 18:54:07,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827748753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:07,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:07,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:07,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994165902] [2021-06-12 18:54:07,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:07,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:07,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:07,591 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) [2021-06-12 18:54:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:07,743 INFO L93 Difference]: Finished difference Result 558 states and 1354 transitions. [2021-06-12 18:54:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:07,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:07,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:07,744 INFO L225 Difference]: With dead ends: 558 [2021-06-12 18:54:07,744 INFO L226 Difference]: Without dead ends: 451 [2021-06-12 18:54:07,744 INFO L728 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 [2021-06-12 18:54:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-06-12 18:54:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 436. [2021-06-12 18:54:07,748 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) [2021-06-12 18:54:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1061 transitions. [2021-06-12 18:54:07,748 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1061 transitions. Word has length 26 [2021-06-12 18:54:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:07,748 INFO L482 AbstractCegarLoop]: Abstraction has 436 states and 1061 transitions. [2021-06-12 18:54:07,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1061 transitions. [2021-06-12 18:54:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:07,749 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:07,749 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:07,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-12 18:54:07,749 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:07,749 INFO L82 PathProgramCache]: Analyzing trace with hash 261581200, now seen corresponding path program 369 times [2021-06-12 18:54:07,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:07,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605947532] [2021-06-12 18:54:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:07,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:07,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605947532] [2021-06-12 18:54:07,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605947532] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:07,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:07,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:07,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426134922] [2021-06-12 18:54:07,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:07,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:07,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:07,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:07,806 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) [2021-06-12 18:54:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:07,958 INFO L93 Difference]: Finished difference Result 542 states and 1322 transitions. [2021-06-12 18:54:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:07,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:07,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:07,958 INFO L225 Difference]: With dead ends: 542 [2021-06-12 18:54:07,958 INFO L226 Difference]: Without dead ends: 443 [2021-06-12 18:54:07,959 INFO L728 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 [2021-06-12 18:54:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-06-12 18:54:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-06-12 18:54:07,962 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) [2021-06-12 18:54:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1066 transitions. [2021-06-12 18:54:07,963 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1066 transitions. Word has length 26 [2021-06-12 18:54:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:07,963 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1066 transitions. [2021-06-12 18:54:07,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1066 transitions. [2021-06-12 18:54:07,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:07,963 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:07,963 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:07,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-12 18:54:07,963 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:07,964 INFO L82 PathProgramCache]: Analyzing trace with hash 654039856, now seen corresponding path program 370 times [2021-06-12 18:54:07,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:07,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878539586] [2021-06-12 18:54:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:08,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:08,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878539586] [2021-06-12 18:54:08,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878539586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:08,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:08,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:08,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433806849] [2021-06-12 18:54:08,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:08,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:08,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:08,021 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) [2021-06-12 18:54:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:08,173 INFO L93 Difference]: Finished difference Result 571 states and 1384 transitions. [2021-06-12 18:54:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:08,173 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 [2021-06-12 18:54:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:08,173 INFO L225 Difference]: With dead ends: 571 [2021-06-12 18:54:08,174 INFO L226 Difference]: Without dead ends: 461 [2021-06-12 18:54:08,174 INFO L728 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 [2021-06-12 18:54:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-06-12 18:54:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 445. [2021-06-12 18:54:08,177 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) [2021-06-12 18:54:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1082 transitions. [2021-06-12 18:54:08,178 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1082 transitions. Word has length 26 [2021-06-12 18:54:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:08,178 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1082 transitions. [2021-06-12 18:54:08,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1082 transitions. [2021-06-12 18:54:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:08,178 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:08,178 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:08,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-12 18:54:08,179 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:08,179 INFO L82 PathProgramCache]: Analyzing trace with hash -850798962, now seen corresponding path program 371 times [2021-06-12 18:54:08,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:08,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299290836] [2021-06-12 18:54:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:08,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:08,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299290836] [2021-06-12 18:54:08,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299290836] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:08,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:08,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:08,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110710957] [2021-06-12 18:54:08,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:08,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:08,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:08,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:08,237 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) [2021-06-12 18:54:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:08,386 INFO L93 Difference]: Finished difference Result 570 states and 1380 transitions. [2021-06-12 18:54:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:08,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:08,387 INFO L225 Difference]: With dead ends: 570 [2021-06-12 18:54:08,387 INFO L226 Difference]: Without dead ends: 468 [2021-06-12 18:54:08,387 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-06-12 18:54:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 452. [2021-06-12 18:54:08,391 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) [2021-06-12 18:54:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1097 transitions. [2021-06-12 18:54:08,392 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1097 transitions. Word has length 26 [2021-06-12 18:54:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:08,392 INFO L482 AbstractCegarLoop]: Abstraction has 452 states and 1097 transitions. [2021-06-12 18:54:08,392 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) [2021-06-12 18:54:08,392 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1097 transitions. [2021-06-12 18:54:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:08,392 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:08,392 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:08,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-12 18:54:08,392 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:08,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1773999346, now seen corresponding path program 372 times [2021-06-12 18:54:08,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:08,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691719531] [2021-06-12 18:54:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:08,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:08,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691719531] [2021-06-12 18:54:08,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691719531] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:08,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:08,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:08,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320705112] [2021-06-12 18:54:08,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:08,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:08,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:08,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:08,450 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) [2021-06-12 18:54:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:08,604 INFO L93 Difference]: Finished difference Result 564 states and 1379 transitions. [2021-06-12 18:54:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:08,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:08,605 INFO L225 Difference]: With dead ends: 564 [2021-06-12 18:54:08,605 INFO L226 Difference]: Without dead ends: 467 [2021-06-12 18:54:08,605 INFO L728 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 [2021-06-12 18:54:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-06-12 18:54:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 457. [2021-06-12 18:54:08,609 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) [2021-06-12 18:54:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1112 transitions. [2021-06-12 18:54:08,610 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1112 transitions. Word has length 26 [2021-06-12 18:54:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:08,610 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1112 transitions. [2021-06-12 18:54:08,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1112 transitions. [2021-06-12 18:54:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:08,610 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:08,610 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:08,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-12 18:54:08,610 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:08,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:08,611 INFO L82 PathProgramCache]: Analyzing trace with hash 381854800, now seen corresponding path program 373 times [2021-06-12 18:54:08,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:08,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595083658] [2021-06-12 18:54:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:08,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:08,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595083658] [2021-06-12 18:54:08,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595083658] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:08,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:08,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:08,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511634092] [2021-06-12 18:54:08,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:08,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:08,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:08,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:08,672 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) [2021-06-12 18:54:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:08,820 INFO L93 Difference]: Finished difference Result 564 states and 1377 transitions. [2021-06-12 18:54:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:08,820 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 [2021-06-12 18:54:08,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:08,821 INFO L225 Difference]: With dead ends: 564 [2021-06-12 18:54:08,821 INFO L226 Difference]: Without dead ends: 460 [2021-06-12 18:54:08,821 INFO L728 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 [2021-06-12 18:54:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-12 18:54:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2021-06-12 18:54:08,825 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) [2021-06-12 18:54:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1081 transitions. [2021-06-12 18:54:08,825 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1081 transitions. Word has length 26 [2021-06-12 18:54:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:08,825 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1081 transitions. [2021-06-12 18:54:08,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1081 transitions. [2021-06-12 18:54:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:08,826 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:08,826 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:08,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-12 18:54:08,826 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:08,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash 558338404, now seen corresponding path program 374 times [2021-06-12 18:54:08,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:08,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019338023] [2021-06-12 18:54:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:08,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:08,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019338023] [2021-06-12 18:54:08,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019338023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:08,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:08,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:08,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656813766] [2021-06-12 18:54:08,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:08,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:08,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:08,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:08,882 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) [2021-06-12 18:54:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:09,028 INFO L93 Difference]: Finished difference Result 598 states and 1453 transitions. [2021-06-12 18:54:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:09,029 INFO L225 Difference]: With dead ends: 598 [2021-06-12 18:54:09,029 INFO L226 Difference]: Without dead ends: 471 [2021-06-12 18:54:09,029 INFO L728 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 [2021-06-12 18:54:09,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-06-12 18:54:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 445. [2021-06-12 18:54:09,033 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) [2021-06-12 18:54:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1077 transitions. [2021-06-12 18:54:09,033 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1077 transitions. Word has length 26 [2021-06-12 18:54:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:09,033 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1077 transitions. [2021-06-12 18:54:09,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1077 transitions. [2021-06-12 18:54:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:09,034 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:09,034 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:09,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-12 18:54:09,034 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:09,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:09,034 INFO L82 PathProgramCache]: Analyzing trace with hash 675595906, now seen corresponding path program 375 times [2021-06-12 18:54:09,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:09,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573945129] [2021-06-12 18:54:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:09,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:09,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573945129] [2021-06-12 18:54:09,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573945129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:09,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:09,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:09,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273444977] [2021-06-12 18:54:09,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:09,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:09,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:09,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:09,090 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) [2021-06-12 18:54:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:09,240 INFO L93 Difference]: Finished difference Result 583 states and 1427 transitions. [2021-06-12 18:54:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:09,240 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:09,241 INFO L225 Difference]: With dead ends: 583 [2021-06-12 18:54:09,241 INFO L226 Difference]: Without dead ends: 464 [2021-06-12 18:54:09,241 INFO L728 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 [2021-06-12 18:54:09,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-06-12 18:54:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 450. [2021-06-12 18:54:09,245 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) [2021-06-12 18:54:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1092 transitions. [2021-06-12 18:54:09,245 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1092 transitions. Word has length 26 [2021-06-12 18:54:09,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:09,245 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1092 transitions. [2021-06-12 18:54:09,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:09,245 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1092 transitions. [2021-06-12 18:54:09,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:09,246 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:09,246 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:09,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-12 18:54:09,246 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:09,246 INFO L82 PathProgramCache]: Analyzing trace with hash -893332636, now seen corresponding path program 376 times [2021-06-12 18:54:09,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:09,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400960006] [2021-06-12 18:54:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:09,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:09,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400960006] [2021-06-12 18:54:09,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400960006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:09,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:09,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:09,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818490961] [2021-06-12 18:54:09,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:09,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:09,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:09,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:09,303 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) [2021-06-12 18:54:09,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:09,449 INFO L93 Difference]: Finished difference Result 599 states and 1449 transitions. [2021-06-12 18:54:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:09,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:09,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:09,450 INFO L225 Difference]: With dead ends: 599 [2021-06-12 18:54:09,450 INFO L226 Difference]: Without dead ends: 472 [2021-06-12 18:54:09,450 INFO L728 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 [2021-06-12 18:54:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-06-12 18:54:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 450. [2021-06-12 18:54:09,453 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) [2021-06-12 18:54:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1072 transitions. [2021-06-12 18:54:09,454 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1072 transitions. Word has length 26 [2021-06-12 18:54:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:09,454 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1072 transitions. [2021-06-12 18:54:09,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1072 transitions. [2021-06-12 18:54:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:09,455 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:09,455 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:09,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-12 18:54:09,455 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:09,455 INFO L82 PathProgramCache]: Analyzing trace with hash -700651216, now seen corresponding path program 377 times [2021-06-12 18:54:09,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:09,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402646732] [2021-06-12 18:54:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:09,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:09,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402646732] [2021-06-12 18:54:09,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402646732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:09,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:09,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:09,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707659535] [2021-06-12 18:54:09,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:09,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:09,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:09,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:09,512 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) [2021-06-12 18:54:09,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:09,653 INFO L93 Difference]: Finished difference Result 553 states and 1321 transitions. [2021-06-12 18:54:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:09,654 INFO L225 Difference]: With dead ends: 553 [2021-06-12 18:54:09,654 INFO L226 Difference]: Without dead ends: 420 [2021-06-12 18:54:09,654 INFO L728 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 [2021-06-12 18:54:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-06-12 18:54:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 403. [2021-06-12 18:54:09,657 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) [2021-06-12 18:54:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 960 transitions. [2021-06-12 18:54:09,658 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 960 transitions. Word has length 26 [2021-06-12 18:54:09,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:09,658 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 960 transitions. [2021-06-12 18:54:09,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 960 transitions. [2021-06-12 18:54:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:09,658 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:09,658 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:09,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-12 18:54:09,658 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:09,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:09,659 INFO L82 PathProgramCache]: Analyzing trace with hash 25600402, now seen corresponding path program 378 times [2021-06-12 18:54:09,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:09,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60846260] [2021-06-12 18:54:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:09,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:09,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60846260] [2021-06-12 18:54:09,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60846260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:09,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:09,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:54:09,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281528326] [2021-06-12 18:54:09,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:54:09,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:09,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:54:09,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:54:09,716 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) [2021-06-12 18:54:09,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:09,841 INFO L93 Difference]: Finished difference Result 542 states and 1283 transitions. [2021-06-12 18:54:09,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:54:09,841 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 [2021-06-12 18:54:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:09,842 INFO L225 Difference]: With dead ends: 542 [2021-06-12 18:54:09,842 INFO L226 Difference]: Without dead ends: 426 [2021-06-12 18:54:09,842 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:54:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-06-12 18:54:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 413. [2021-06-12 18:54:09,845 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) [2021-06-12 18:54:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 974 transitions. [2021-06-12 18:54:09,846 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 974 transitions. Word has length 26 [2021-06-12 18:54:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:09,846 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 974 transitions. [2021-06-12 18:54:09,846 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) [2021-06-12 18:54:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 974 transitions. [2021-06-12 18:54:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:09,846 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:09,846 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:09,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-12 18:54:09,846 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:09,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:09,847 INFO L82 PathProgramCache]: Analyzing trace with hash -573666220, now seen corresponding path program 379 times [2021-06-12 18:54:09,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:09,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544772957] [2021-06-12 18:54:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:09,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:09,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544772957] [2021-06-12 18:54:09,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544772957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:09,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:09,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:09,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377872554] [2021-06-12 18:54:09,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:09,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:09,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:09,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:09,915 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) [2021-06-12 18:54:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:10,065 INFO L93 Difference]: Finished difference Result 537 states and 1263 transitions. [2021-06-12 18:54:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:10,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:10,066 INFO L225 Difference]: With dead ends: 537 [2021-06-12 18:54:10,066 INFO L226 Difference]: Without dead ends: 418 [2021-06-12 18:54:10,066 INFO L728 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 [2021-06-12 18:54:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-06-12 18:54:10,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 403. [2021-06-12 18:54:10,069 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) [2021-06-12 18:54:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 952 transitions. [2021-06-12 18:54:10,070 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 952 transitions. Word has length 26 [2021-06-12 18:54:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:10,070 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 952 transitions. [2021-06-12 18:54:10,070 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) [2021-06-12 18:54:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 952 transitions. [2021-06-12 18:54:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:10,070 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:10,070 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:10,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-12 18:54:10,070 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:10,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1455837904, now seen corresponding path program 380 times [2021-06-12 18:54:10,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:10,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534926386] [2021-06-12 18:54:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:10,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:10,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534926386] [2021-06-12 18:54:10,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534926386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:10,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:10,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:10,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790503234] [2021-06-12 18:54:10,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:10,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:10,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:10,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:10,128 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) [2021-06-12 18:54:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:10,284 INFO L93 Difference]: Finished difference Result 526 states and 1249 transitions. [2021-06-12 18:54:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:10,284 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 [2021-06-12 18:54:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:10,285 INFO L225 Difference]: With dead ends: 526 [2021-06-12 18:54:10,285 INFO L226 Difference]: Without dead ends: 416 [2021-06-12 18:54:10,285 INFO L728 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 [2021-06-12 18:54:10,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-12 18:54:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 401. [2021-06-12 18:54:10,288 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) [2021-06-12 18:54:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 946 transitions. [2021-06-12 18:54:10,289 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 946 transitions. Word has length 26 [2021-06-12 18:54:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:10,289 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 946 transitions. [2021-06-12 18:54:10,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 946 transitions. [2021-06-12 18:54:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:10,289 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:10,289 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:10,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-12 18:54:10,289 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:10,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:10,290 INFO L82 PathProgramCache]: Analyzing trace with hash -2055104526, now seen corresponding path program 381 times [2021-06-12 18:54:10,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:10,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214623811] [2021-06-12 18:54:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:10,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:10,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214623811] [2021-06-12 18:54:10,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214623811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:10,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:10,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:10,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845180949] [2021-06-12 18:54:10,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:10,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:10,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:10,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:10,349 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) [2021-06-12 18:54:10,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:10,502 INFO L93 Difference]: Finished difference Result 506 states and 1204 transitions. [2021-06-12 18:54:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:10,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:10,503 INFO L225 Difference]: With dead ends: 506 [2021-06-12 18:54:10,503 INFO L226 Difference]: Without dead ends: 407 [2021-06-12 18:54:10,503 INFO L728 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 [2021-06-12 18:54:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-06-12 18:54:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2021-06-12 18:54:10,506 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) [2021-06-12 18:54:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 945 transitions. [2021-06-12 18:54:10,507 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 945 transitions. Word has length 26 [2021-06-12 18:54:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:10,507 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 945 transitions. [2021-06-12 18:54:10,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 945 transitions. [2021-06-12 18:54:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:10,507 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:10,508 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:10,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-12 18:54:10,508 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:10,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:10,508 INFO L82 PathProgramCache]: Analyzing trace with hash -542686380, now seen corresponding path program 382 times [2021-06-12 18:54:10,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:10,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528573508] [2021-06-12 18:54:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:10,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:10,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528573508] [2021-06-12 18:54:10,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528573508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:10,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:10,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:10,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80787492] [2021-06-12 18:54:10,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:10,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:10,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:10,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:10,566 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) [2021-06-12 18:54:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:10,717 INFO L93 Difference]: Finished difference Result 513 states and 1227 transitions. [2021-06-12 18:54:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:10,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:10,718 INFO L225 Difference]: With dead ends: 513 [2021-06-12 18:54:10,718 INFO L226 Difference]: Without dead ends: 416 [2021-06-12 18:54:10,718 INFO L728 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 [2021-06-12 18:54:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-12 18:54:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 406. [2021-06-12 18:54:10,722 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) [2021-06-12 18:54:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 960 transitions. [2021-06-12 18:54:10,722 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 960 transitions. Word has length 26 [2021-06-12 18:54:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:10,722 INFO L482 AbstractCegarLoop]: Abstraction has 406 states and 960 transitions. [2021-06-12 18:54:10,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 960 transitions. [2021-06-12 18:54:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:10,723 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:10,723 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:10,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-12 18:54:10,723 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:10,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:10,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1934830926, now seen corresponding path program 383 times [2021-06-12 18:54:10,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:10,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945469381] [2021-06-12 18:54:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:10,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:10,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945469381] [2021-06-12 18:54:10,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945469381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:10,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:10,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:10,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567543020] [2021-06-12 18:54:10,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:10,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:10,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:10,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:10,780 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) [2021-06-12 18:54:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:10,926 INFO L93 Difference]: Finished difference Result 532 states and 1254 transitions. [2021-06-12 18:54:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:10,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:10,927 INFO L225 Difference]: With dead ends: 532 [2021-06-12 18:54:10,927 INFO L226 Difference]: Without dead ends: 430 [2021-06-12 18:54:10,927 INFO L728 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 [2021-06-12 18:54:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-12 18:54:10,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 416. [2021-06-12 18:54:10,930 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) [2021-06-12 18:54:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 974 transitions. [2021-06-12 18:54:10,931 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 974 transitions. Word has length 26 [2021-06-12 18:54:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:10,931 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 974 transitions. [2021-06-12 18:54:10,931 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) [2021-06-12 18:54:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 974 transitions. [2021-06-12 18:54:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:10,932 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:10,932 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:10,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-12 18:54:10,932 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:10,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:10,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1603464470, now seen corresponding path program 384 times [2021-06-12 18:54:10,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:10,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465584907] [2021-06-12 18:54:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:10,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:10,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465584907] [2021-06-12 18:54:10,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465584907] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:10,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:10,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:10,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110406857] [2021-06-12 18:54:10,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:10,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:10,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:10,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:10,988 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) [2021-06-12 18:54:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:11,134 INFO L93 Difference]: Finished difference Result 513 states and 1207 transitions. [2021-06-12 18:54:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:11,135 INFO L225 Difference]: With dead ends: 513 [2021-06-12 18:54:11,135 INFO L226 Difference]: Without dead ends: 404 [2021-06-12 18:54:11,135 INFO L728 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 [2021-06-12 18:54:11,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-06-12 18:54:11,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 381. [2021-06-12 18:54:11,138 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) [2021-06-12 18:54:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 898 transitions. [2021-06-12 18:54:11,139 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 898 transitions. Word has length 26 [2021-06-12 18:54:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:11,139 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 898 transitions. [2021-06-12 18:54:11,139 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) [2021-06-12 18:54:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 898 transitions. [2021-06-12 18:54:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:11,139 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:11,139 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:11,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-12 18:54:11,139 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:11,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:11,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1538144538, now seen corresponding path program 385 times [2021-06-12 18:54:11,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:11,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263617719] [2021-06-12 18:54:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:11,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:11,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263617719] [2021-06-12 18:54:11,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263617719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:11,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:11,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:11,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578480725] [2021-06-12 18:54:11,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:11,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:11,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:11,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:11,195 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) [2021-06-12 18:54:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:11,336 INFO L93 Difference]: Finished difference Result 499 states and 1177 transitions. [2021-06-12 18:54:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:11,337 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 [2021-06-12 18:54:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:11,337 INFO L225 Difference]: With dead ends: 499 [2021-06-12 18:54:11,337 INFO L226 Difference]: Without dead ends: 381 [2021-06-12 18:54:11,337 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:11,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-06-12 18:54:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-06-12 18:54:11,340 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) [2021-06-12 18:54:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 886 transitions. [2021-06-12 18:54:11,341 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 886 transitions. Word has length 26 [2021-06-12 18:54:11,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:11,341 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 886 transitions. [2021-06-12 18:54:11,341 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) [2021-06-12 18:54:11,341 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 886 transitions. [2021-06-12 18:54:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:11,341 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:11,341 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:11,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-12 18:54:11,341 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:11,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:11,341 INFO L82 PathProgramCache]: Analyzing trace with hash 629893402, now seen corresponding path program 386 times [2021-06-12 18:54:11,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:11,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384518782] [2021-06-12 18:54:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:11,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:11,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384518782] [2021-06-12 18:54:11,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384518782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:11,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:11,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:11,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195344606] [2021-06-12 18:54:11,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:11,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:11,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:11,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:11,408 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) [2021-06-12 18:54:11,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:11,545 INFO L93 Difference]: Finished difference Result 491 states and 1149 transitions. [2021-06-12 18:54:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:11,545 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 [2021-06-12 18:54:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:11,546 INFO L225 Difference]: With dead ends: 491 [2021-06-12 18:54:11,546 INFO L226 Difference]: Without dead ends: 384 [2021-06-12 18:54:11,546 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-06-12 18:54:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2021-06-12 18:54:11,549 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) [2021-06-12 18:54:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 884 transitions. [2021-06-12 18:54:11,549 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 884 transitions. Word has length 26 [2021-06-12 18:54:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:11,549 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 884 transitions. [2021-06-12 18:54:11,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 884 transitions. [2021-06-12 18:54:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:11,550 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:11,550 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:11,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-12 18:54:11,550 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:11,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:11,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1550469368, now seen corresponding path program 387 times [2021-06-12 18:54:11,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:11,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562995310] [2021-06-12 18:54:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:11,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:11,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562995310] [2021-06-12 18:54:11,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562995310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:11,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:11,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:11,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542870778] [2021-06-12 18:54:11,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:11,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:11,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:11,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:11,606 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) [2021-06-12 18:54:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:11,744 INFO L93 Difference]: Finished difference Result 484 states and 1132 transitions. [2021-06-12 18:54:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:11,745 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:11,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:11,745 INFO L225 Difference]: With dead ends: 484 [2021-06-12 18:54:11,745 INFO L226 Difference]: Without dead ends: 369 [2021-06-12 18:54:11,745 INFO L728 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 [2021-06-12 18:54:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-06-12 18:54:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-06-12 18:54:11,748 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) [2021-06-12 18:54:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 860 transitions. [2021-06-12 18:54:11,748 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 860 transitions. Word has length 26 [2021-06-12 18:54:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:11,749 INFO L482 AbstractCegarLoop]: Abstraction has 369 states and 860 transitions. [2021-06-12 18:54:11,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 860 transitions. [2021-06-12 18:54:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:11,749 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:11,749 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:11,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-12 18:54:11,749 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:11,749 INFO L82 PathProgramCache]: Analyzing trace with hash 924274646, now seen corresponding path program 388 times [2021-06-12 18:54:11,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:11,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097319088] [2021-06-12 18:54:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:11,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:11,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097319088] [2021-06-12 18:54:11,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097319088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:11,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:11,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:11,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693392573] [2021-06-12 18:54:11,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:11,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:11,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:11,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:11,805 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) [2021-06-12 18:54:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:11,948 INFO L93 Difference]: Finished difference Result 497 states and 1163 transitions. [2021-06-12 18:54:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:11,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:11,949 INFO L225 Difference]: With dead ends: 497 [2021-06-12 18:54:11,949 INFO L226 Difference]: Without dead ends: 349 [2021-06-12 18:54:11,949 INFO L728 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 [2021-06-12 18:54:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-12 18:54:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2021-06-12 18:54:11,952 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) [2021-06-12 18:54:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 798 transitions. [2021-06-12 18:54:11,952 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 798 transitions. Word has length 26 [2021-06-12 18:54:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:11,952 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 798 transitions. [2021-06-12 18:54:11,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 798 transitions. [2021-06-12 18:54:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:11,953 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:11,953 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:11,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-12 18:54:11,953 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:11,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1465978148, now seen corresponding path program 389 times [2021-06-12 18:54:11,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:11,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117071956] [2021-06-12 18:54:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:12,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:12,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117071956] [2021-06-12 18:54:12,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117071956] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:12,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:12,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:12,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118072698] [2021-06-12 18:54:12,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:12,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:12,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:12,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:12,008 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) [2021-06-12 18:54:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:12,145 INFO L93 Difference]: Finished difference Result 469 states and 1098 transitions. [2021-06-12 18:54:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:12,145 INFO L225 Difference]: With dead ends: 469 [2021-06-12 18:54:12,145 INFO L226 Difference]: Without dead ends: 357 [2021-06-12 18:54:12,146 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-06-12 18:54:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-06-12 18:54:12,148 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) [2021-06-12 18:54:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 822 transitions. [2021-06-12 18:54:12,149 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 822 transitions. Word has length 26 [2021-06-12 18:54:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:12,149 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 822 transitions. [2021-06-12 18:54:12,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 822 transitions. [2021-06-12 18:54:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:12,149 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:12,149 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:12,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-12 18:54:12,149 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:12,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1041532148, now seen corresponding path program 390 times [2021-06-12 18:54:12,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:12,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122631783] [2021-06-12 18:54:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:12,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:12,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122631783] [2021-06-12 18:54:12,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122631783] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:12,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:12,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:12,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608508423] [2021-06-12 18:54:12,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:12,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:12,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:12,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:12,208 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) [2021-06-12 18:54:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:12,354 INFO L93 Difference]: Finished difference Result 474 states and 1113 transitions. [2021-06-12 18:54:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:12,354 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 [2021-06-12 18:54:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:12,355 INFO L225 Difference]: With dead ends: 474 [2021-06-12 18:54:12,355 INFO L226 Difference]: Without dead ends: 376 [2021-06-12 18:54:12,355 INFO L728 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 [2021-06-12 18:54:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-06-12 18:54:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 362. [2021-06-12 18:54:12,358 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) [2021-06-12 18:54:12,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 837 transitions. [2021-06-12 18:54:12,358 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 837 transitions. Word has length 26 [2021-06-12 18:54:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:12,358 INFO L482 AbstractCegarLoop]: Abstraction has 362 states and 837 transitions. [2021-06-12 18:54:12,358 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) [2021-06-12 18:54:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 837 transitions. [2021-06-12 18:54:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:12,359 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:12,359 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:12,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-12 18:54:12,359 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:12,359 INFO L82 PathProgramCache]: Analyzing trace with hash -527396394, now seen corresponding path program 391 times [2021-06-12 18:54:12,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:12,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811749475] [2021-06-12 18:54:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:12,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:12,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811749475] [2021-06-12 18:54:12,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811749475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:12,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:12,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:12,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246508327] [2021-06-12 18:54:12,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:12,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:12,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:12,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:12,417 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) [2021-06-12 18:54:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:12,558 INFO L93 Difference]: Finished difference Result 470 states and 1093 transitions. [2021-06-12 18:54:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:12,559 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 [2021-06-12 18:54:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:12,559 INFO L225 Difference]: With dead ends: 470 [2021-06-12 18:54:12,559 INFO L226 Difference]: Without dead ends: 364 [2021-06-12 18:54:12,559 INFO L728 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 [2021-06-12 18:54:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-06-12 18:54:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 345. [2021-06-12 18:54:12,562 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) [2021-06-12 18:54:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 793 transitions. [2021-06-12 18:54:12,562 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 793 transitions. Word has length 26 [2021-06-12 18:54:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:12,562 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 793 transitions. [2021-06-12 18:54:12,563 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) [2021-06-12 18:54:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 793 transitions. [2021-06-12 18:54:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:12,563 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:12,563 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:12,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-12 18:54:12,563 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:12,563 INFO L82 PathProgramCache]: Analyzing trace with hash -273711274, now seen corresponding path program 392 times [2021-06-12 18:54:12,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:12,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106399498] [2021-06-12 18:54:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:12,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:12,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106399498] [2021-06-12 18:54:12,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106399498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:12,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:12,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:12,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726912695] [2021-06-12 18:54:12,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:12,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:12,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:12,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:12,620 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) [2021-06-12 18:54:12,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:12,756 INFO L93 Difference]: Finished difference Result 452 states and 1049 transitions. [2021-06-12 18:54:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:12,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:12,757 INFO L225 Difference]: With dead ends: 452 [2021-06-12 18:54:12,757 INFO L226 Difference]: Without dead ends: 346 [2021-06-12 18:54:12,757 INFO L728 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 [2021-06-12 18:54:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-06-12 18:54:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 341. [2021-06-12 18:54:12,759 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) [2021-06-12 18:54:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 784 transitions. [2021-06-12 18:54:12,760 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 784 transitions. Word has length 26 [2021-06-12 18:54:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:12,760 INFO L482 AbstractCegarLoop]: Abstraction has 341 states and 784 transitions. [2021-06-12 18:54:12,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 784 transitions. [2021-06-12 18:54:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:12,760 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:12,760 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:12,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-12 18:54:12,761 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:12,761 INFO L82 PathProgramCache]: Analyzing trace with hash -872977896, now seen corresponding path program 393 times [2021-06-12 18:54:12,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:12,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439229424] [2021-06-12 18:54:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:12,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:12,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439229424] [2021-06-12 18:54:12,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439229424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:12,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:12,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:12,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082817691] [2021-06-12 18:54:12,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:12,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:12,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:12,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:12,822 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) [2021-06-12 18:54:12,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:12,962 INFO L93 Difference]: Finished difference Result 448 states and 1039 transitions. [2021-06-12 18:54:12,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:12,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:12,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:12,963 INFO L225 Difference]: With dead ends: 448 [2021-06-12 18:54:12,963 INFO L226 Difference]: Without dead ends: 348 [2021-06-12 18:54:12,963 INFO L728 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 [2021-06-12 18:54:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-12 18:54:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2021-06-12 18:54:12,966 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) [2021-06-12 18:54:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 788 transitions. [2021-06-12 18:54:12,966 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 788 transitions. Word has length 26 [2021-06-12 18:54:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:12,966 INFO L482 AbstractCegarLoop]: Abstraction has 344 states and 788 transitions. [2021-06-12 18:54:12,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 788 transitions. [2021-06-12 18:54:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:12,967 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:12,967 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:12,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-12 18:54:12,967 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:12,967 INFO L82 PathProgramCache]: Analyzing trace with hash -480519240, now seen corresponding path program 394 times [2021-06-12 18:54:12,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:12,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299770555] [2021-06-12 18:54:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:13,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:13,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299770555] [2021-06-12 18:54:13,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299770555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:13,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:13,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:13,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134369729] [2021-06-12 18:54:13,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:13,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:13,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:13,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:13,024 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) [2021-06-12 18:54:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:13,156 INFO L93 Difference]: Finished difference Result 453 states and 1051 transitions. [2021-06-12 18:54:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:13,156 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:13,157 INFO L225 Difference]: With dead ends: 453 [2021-06-12 18:54:13,157 INFO L226 Difference]: Without dead ends: 352 [2021-06-12 18:54:13,157 INFO L728 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 [2021-06-12 18:54:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-06-12 18:54:13,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 345. [2021-06-12 18:54:13,159 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) [2021-06-12 18:54:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 789 transitions. [2021-06-12 18:54:13,160 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 789 transitions. Word has length 26 [2021-06-12 18:54:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:13,160 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 789 transitions. [2021-06-12 18:54:13,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 789 transitions. [2021-06-12 18:54:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:13,160 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:13,160 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:13,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-12 18:54:13,160 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:13,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1985358058, now seen corresponding path program 395 times [2021-06-12 18:54:13,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:13,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078241269] [2021-06-12 18:54:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:13,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:13,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078241269] [2021-06-12 18:54:13,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078241269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:13,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:13,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:13,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495888874] [2021-06-12 18:54:13,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:13,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:13,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:13,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:13,217 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) [2021-06-12 18:54:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:13,356 INFO L93 Difference]: Finished difference Result 452 states and 1045 transitions. [2021-06-12 18:54:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:13,357 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 [2021-06-12 18:54:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:13,357 INFO L225 Difference]: With dead ends: 452 [2021-06-12 18:54:13,357 INFO L226 Difference]: Without dead ends: 349 [2021-06-12 18:54:13,357 INFO L728 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 [2021-06-12 18:54:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-12 18:54:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2021-06-12 18:54:13,360 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) [2021-06-12 18:54:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 790 transitions. [2021-06-12 18:54:13,360 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 790 transitions. Word has length 26 [2021-06-12 18:54:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:13,361 INFO L482 AbstractCegarLoop]: Abstraction has 346 states and 790 transitions. [2021-06-12 18:54:13,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 790 transitions. [2021-06-12 18:54:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:13,361 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:13,361 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:13,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-12 18:54:13,361 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash 639440250, now seen corresponding path program 396 times [2021-06-12 18:54:13,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:13,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886775565] [2021-06-12 18:54:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:13,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:13,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886775565] [2021-06-12 18:54:13,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886775565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:13,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:13,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:13,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124066792] [2021-06-12 18:54:13,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:13,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:13,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:13,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:13,427 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) [2021-06-12 18:54:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:13,573 INFO L93 Difference]: Finished difference Result 456 states and 1063 transitions. [2021-06-12 18:54:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:13,573 INFO L225 Difference]: With dead ends: 456 [2021-06-12 18:54:13,573 INFO L226 Difference]: Without dead ends: 358 [2021-06-12 18:54:13,573 INFO L728 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 [2021-06-12 18:54:13,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-06-12 18:54:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 351. [2021-06-12 18:54:13,576 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) [2021-06-12 18:54:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 805 transitions. [2021-06-12 18:54:13,577 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 805 transitions. Word has length 26 [2021-06-12 18:54:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:13,577 INFO L482 AbstractCegarLoop]: Abstraction has 351 states and 805 transitions. [2021-06-12 18:54:13,577 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) [2021-06-12 18:54:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 805 transitions. [2021-06-12 18:54:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:13,577 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:13,577 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:13,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-12 18:54:13,577 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -752704296, now seen corresponding path program 397 times [2021-06-12 18:54:13,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:13,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127338569] [2021-06-12 18:54:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:13,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:13,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127338569] [2021-06-12 18:54:13,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127338569] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:13,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:13,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:13,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568426365] [2021-06-12 18:54:13,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:13,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:13,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:13,655 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) [2021-06-12 18:54:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:13,797 INFO L93 Difference]: Finished difference Result 456 states and 1056 transitions. [2021-06-12 18:54:13,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:13,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:13,798 INFO L225 Difference]: With dead ends: 456 [2021-06-12 18:54:13,798 INFO L226 Difference]: Without dead ends: 351 [2021-06-12 18:54:13,798 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:13,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-06-12 18:54:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2021-06-12 18:54:13,800 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) [2021-06-12 18:54:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 777 transitions. [2021-06-12 18:54:13,801 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 777 transitions. Word has length 26 [2021-06-12 18:54:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:13,801 INFO L482 AbstractCegarLoop]: Abstraction has 339 states and 777 transitions. [2021-06-12 18:54:13,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 777 transitions. [2021-06-12 18:54:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:13,801 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:13,801 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:13,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-12 18:54:13,801 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:13,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1846084458, now seen corresponding path program 398 times [2021-06-12 18:54:13,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:13,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952611493] [2021-06-12 18:54:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:13,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:13,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952611493] [2021-06-12 18:54:13,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952611493] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:13,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:13,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:13,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302262017] [2021-06-12 18:54:13,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:13,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:13,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:13,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:13,863 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) [2021-06-12 18:54:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:13,996 INFO L93 Difference]: Finished difference Result 462 states and 1071 transitions. [2021-06-12 18:54:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:13,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:13,997 INFO L225 Difference]: With dead ends: 462 [2021-06-12 18:54:13,997 INFO L226 Difference]: Without dead ends: 311 [2021-06-12 18:54:13,997 INFO L728 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 [2021-06-12 18:54:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-06-12 18:54:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-06-12 18:54:13,999 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) [2021-06-12 18:54:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 705 transitions. [2021-06-12 18:54:14,000 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 705 transitions. Word has length 26 [2021-06-12 18:54:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:14,000 INFO L482 AbstractCegarLoop]: Abstraction has 311 states and 705 transitions. [2021-06-12 18:54:14,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 705 transitions. [2021-06-12 18:54:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:14,000 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:14,000 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:14,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-12 18:54:14,000 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:14,000 INFO L82 PathProgramCache]: Analyzing trace with hash 58627458, now seen corresponding path program 399 times [2021-06-12 18:54:14,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:14,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872238097] [2021-06-12 18:54:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:14,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:14,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872238097] [2021-06-12 18:54:14,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872238097] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:14,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:14,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:14,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080557879] [2021-06-12 18:54:14,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:14,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:14,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:14,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:14,058 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) [2021-06-12 18:54:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:14,194 INFO L93 Difference]: Finished difference Result 447 states and 1032 transitions. [2021-06-12 18:54:14,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:14,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:14,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:14,195 INFO L225 Difference]: With dead ends: 447 [2021-06-12 18:54:14,195 INFO L226 Difference]: Without dead ends: 326 [2021-06-12 18:54:14,195 INFO L728 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 [2021-06-12 18:54:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-06-12 18:54:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-06-12 18:54:14,197 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) [2021-06-12 18:54:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 732 transitions. [2021-06-12 18:54:14,198 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 732 transitions. Word has length 26 [2021-06-12 18:54:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:14,198 INFO L482 AbstractCegarLoop]: Abstraction has 326 states and 732 transitions. [2021-06-12 18:54:14,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 732 transitions. [2021-06-12 18:54:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:14,198 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:14,198 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:14,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-12 18:54:14,198 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:14,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1510301084, now seen corresponding path program 400 times [2021-06-12 18:54:14,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:14,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724484929] [2021-06-12 18:54:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:14,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:14,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724484929] [2021-06-12 18:54:14,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724484929] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:14,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:14,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:14,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561101962] [2021-06-12 18:54:14,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:14,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:14,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:14,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:14,255 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) [2021-06-12 18:54:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:14,385 INFO L93 Difference]: Finished difference Result 451 states and 1024 transitions. [2021-06-12 18:54:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:14,385 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 [2021-06-12 18:54:14,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:14,385 INFO L225 Difference]: With dead ends: 451 [2021-06-12 18:54:14,385 INFO L226 Difference]: Without dead ends: 322 [2021-06-12 18:54:14,385 INFO L728 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 [2021-06-12 18:54:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-06-12 18:54:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2021-06-12 18:54:14,388 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) [2021-06-12 18:54:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 701 transitions. [2021-06-12 18:54:14,388 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 701 transitions. Word has length 26 [2021-06-12 18:54:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:14,388 INFO L482 AbstractCegarLoop]: Abstraction has 314 states and 701 transitions. [2021-06-12 18:54:14,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 701 transitions. [2021-06-12 18:54:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:14,389 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:14,389 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:14,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-12 18:54:14,389 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:14,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1667639142, now seen corresponding path program 401 times [2021-06-12 18:54:14,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:14,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194462028] [2021-06-12 18:54:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:14,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:14,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194462028] [2021-06-12 18:54:14,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194462028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:14,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:14,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:14,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115413452] [2021-06-12 18:54:14,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:14,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:14,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:14,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:14,446 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) [2021-06-12 18:54:14,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:14,571 INFO L93 Difference]: Finished difference Result 411 states and 939 transitions. [2021-06-12 18:54:14,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:14,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:14,571 INFO L225 Difference]: With dead ends: 411 [2021-06-12 18:54:14,571 INFO L226 Difference]: Without dead ends: 282 [2021-06-12 18:54:14,571 INFO L728 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 [2021-06-12 18:54:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-06-12 18:54:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 273. [2021-06-12 18:54:14,573 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) [2021-06-12 18:54:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 610 transitions. [2021-06-12 18:54:14,574 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 610 transitions. Word has length 26 [2021-06-12 18:54:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:14,574 INFO L482 AbstractCegarLoop]: Abstraction has 273 states and 610 transitions. [2021-06-12 18:54:14,574 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) [2021-06-12 18:54:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 610 transitions. [2021-06-12 18:54:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:14,574 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:14,574 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:14,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-12 18:54:14,574 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1477860122, now seen corresponding path program 402 times [2021-06-12 18:54:14,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:14,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968394046] [2021-06-12 18:54:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:14,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:14,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968394046] [2021-06-12 18:54:14,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968394046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:14,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:14,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:14,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994393301] [2021-06-12 18:54:14,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:14,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:14,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:14,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:14,635 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) [2021-06-12 18:54:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:14,762 INFO L93 Difference]: Finished difference Result 364 states and 835 transitions. [2021-06-12 18:54:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:14,763 INFO L225 Difference]: With dead ends: 364 [2021-06-12 18:54:14,763 INFO L226 Difference]: Without dead ends: 253 [2021-06-12 18:54:14,763 INFO L728 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 [2021-06-12 18:54:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-06-12 18:54:14,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2021-06-12 18:54:14,765 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) [2021-06-12 18:54:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 553 transitions. [2021-06-12 18:54:14,765 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 553 transitions. Word has length 26 [2021-06-12 18:54:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:14,765 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 553 transitions. [2021-06-12 18:54:14,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 553 transitions. [2021-06-12 18:54:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:14,766 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:14,766 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:14,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-12 18:54:14,766 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash -26978696, now seen corresponding path program 403 times [2021-06-12 18:54:14,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:14,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657640317] [2021-06-12 18:54:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:14,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:14,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657640317] [2021-06-12 18:54:14,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657640317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:14,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:14,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:14,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959651503] [2021-06-12 18:54:14,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:14,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:14,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:14,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:14,823 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) [2021-06-12 18:54:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:14,955 INFO L93 Difference]: Finished difference Result 350 states and 808 transitions. [2021-06-12 18:54:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:14,956 INFO L225 Difference]: With dead ends: 350 [2021-06-12 18:54:14,956 INFO L226 Difference]: Without dead ends: 250 [2021-06-12 18:54:14,956 INFO L728 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 [2021-06-12 18:54:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-06-12 18:54:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-06-12 18:54:14,958 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) [2021-06-12 18:54:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 552 transitions. [2021-06-12 18:54:14,958 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 552 transitions. Word has length 26 [2021-06-12 18:54:14,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:14,959 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 552 transitions. [2021-06-12 18:54:14,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 552 transitions. [2021-06-12 18:54:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:14,959 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:14,959 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:14,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-12 18:54:14,959 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1697147684, now seen corresponding path program 404 times [2021-06-12 18:54:14,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:14,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486296363] [2021-06-12 18:54:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:15,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:15,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486296363] [2021-06-12 18:54:15,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486296363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:15,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:15,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:15,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141015021] [2021-06-12 18:54:15,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:15,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:15,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:15,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:15,019 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) [2021-06-12 18:54:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:15,151 INFO L93 Difference]: Finished difference Result 360 states and 826 transitions. [2021-06-12 18:54:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:15,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:15,151 INFO L225 Difference]: With dead ends: 360 [2021-06-12 18:54:15,152 INFO L226 Difference]: Without dead ends: 265 [2021-06-12 18:54:15,152 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-06-12 18:54:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-06-12 18:54:15,154 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) [2021-06-12 18:54:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 579 transitions. [2021-06-12 18:54:15,154 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 579 transitions. Word has length 26 [2021-06-12 18:54:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:15,154 INFO L482 AbstractCegarLoop]: Abstraction has 259 states and 579 transitions. [2021-06-12 18:54:15,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 579 transitions. [2021-06-12 18:54:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:15,154 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:15,154 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:15,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-12 18:54:15,155 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:15,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1205675066, now seen corresponding path program 405 times [2021-06-12 18:54:15,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:15,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153301986] [2021-06-12 18:54:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:15,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:15,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153301986] [2021-06-12 18:54:15,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153301986] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:15,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:15,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:15,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249457209] [2021-06-12 18:54:15,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:15,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:15,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:15,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:15,211 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) [2021-06-12 18:54:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:15,340 INFO L93 Difference]: Finished difference Result 368 states and 838 transitions. [2021-06-12 18:54:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:15,340 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:15,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:15,340 INFO L225 Difference]: With dead ends: 368 [2021-06-12 18:54:15,340 INFO L226 Difference]: Without dead ends: 268 [2021-06-12 18:54:15,340 INFO L728 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 [2021-06-12 18:54:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-06-12 18:54:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 257. [2021-06-12 18:54:15,342 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) [2021-06-12 18:54:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 575 transitions. [2021-06-12 18:54:15,343 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 575 transitions. Word has length 26 [2021-06-12 18:54:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:15,343 INFO L482 AbstractCegarLoop]: Abstraction has 257 states and 575 transitions. [2021-06-12 18:54:15,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 575 transitions. [2021-06-12 18:54:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:15,343 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:15,343 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:15,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-12 18:54:15,343 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:15,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1087756786, now seen corresponding path program 406 times [2021-06-12 18:54:15,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:15,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290404708] [2021-06-12 18:54:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:15,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:15,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290404708] [2021-06-12 18:54:15,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290404708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:15,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:15,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:15,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040654976] [2021-06-12 18:54:15,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:15,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:15,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:15,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:15,400 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) [2021-06-12 18:54:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:15,527 INFO L93 Difference]: Finished difference Result 366 states and 838 transitions. [2021-06-12 18:54:15,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:15,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:15,527 INFO L225 Difference]: With dead ends: 366 [2021-06-12 18:54:15,528 INFO L226 Difference]: Without dead ends: 247 [2021-06-12 18:54:15,528 INFO L728 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 [2021-06-12 18:54:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-06-12 18:54:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-06-12 18:54:15,530 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) [2021-06-12 18:54:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 553 transitions. [2021-06-12 18:54:15,530 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 553 transitions. Word has length 26 [2021-06-12 18:54:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:15,530 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 553 transitions. [2021-06-12 18:54:15,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:15,530 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 553 transitions. [2021-06-12 18:54:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:15,530 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:15,530 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:15,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-12 18:54:15,530 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:15,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:15,531 INFO L82 PathProgramCache]: Analyzing trace with hash -703725496, now seen corresponding path program 407 times [2021-06-12 18:54:15,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:15,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621499761] [2021-06-12 18:54:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:15,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:15,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621499761] [2021-06-12 18:54:15,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621499761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:15,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:15,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:15,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384152626] [2021-06-12 18:54:15,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:15,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:15,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:15,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:15,605 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) [2021-06-12 18:54:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:15,736 INFO L93 Difference]: Finished difference Result 339 states and 779 transitions. [2021-06-12 18:54:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:15,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:15,737 INFO L225 Difference]: With dead ends: 339 [2021-06-12 18:54:15,737 INFO L226 Difference]: Without dead ends: 230 [2021-06-12 18:54:15,737 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-06-12 18:54:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 217. [2021-06-12 18:54:15,739 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) [2021-06-12 18:54:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 493 transitions. [2021-06-12 18:54:15,739 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 493 transitions. Word has length 26 [2021-06-12 18:54:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:15,739 INFO L482 AbstractCegarLoop]: Abstraction has 217 states and 493 transitions. [2021-06-12 18:54:15,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 493 transitions. [2021-06-12 18:54:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:15,740 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:15,740 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:15,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-12 18:54:15,740 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1474886448, now seen corresponding path program 408 times [2021-06-12 18:54:15,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:15,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713081910] [2021-06-12 18:54:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:15,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:15,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713081910] [2021-06-12 18:54:15,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713081910] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:15,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:15,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:15,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837763653] [2021-06-12 18:54:15,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:15,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:15,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:15,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:15,797 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) [2021-06-12 18:54:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:15,922 INFO L93 Difference]: Finished difference Result 318 states and 736 transitions. [2021-06-12 18:54:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:15,922 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:15,922 INFO L225 Difference]: With dead ends: 318 [2021-06-12 18:54:15,922 INFO L226 Difference]: Without dead ends: 213 [2021-06-12 18:54:15,922 INFO L728 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 [2021-06-12 18:54:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-06-12 18:54:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-06-12 18:54:15,924 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) [2021-06-12 18:54:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 485 transitions. [2021-06-12 18:54:15,924 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 485 transitions. Word has length 26 [2021-06-12 18:54:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:15,924 INFO L482 AbstractCegarLoop]: Abstraction has 213 states and 485 transitions. [2021-06-12 18:54:15,925 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) [2021-06-12 18:54:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 485 transitions. [2021-06-12 18:54:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:15,925 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:15,925 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:15,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-06-12 18:54:15,925 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:15,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1707700686, now seen corresponding path program 409 times [2021-06-12 18:54:15,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:15,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168437940] [2021-06-12 18:54:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:15,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:15,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168437940] [2021-06-12 18:54:15,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168437940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:15,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:15,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 18:54:15,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319474865] [2021-06-12 18:54:15,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 18:54:15,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:15,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 18:54:15,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 18:54:15,973 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) [2021-06-12 18:54:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:16,073 INFO L93 Difference]: Finished difference Result 318 states and 737 transitions. [2021-06-12 18:54:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 18:54:16,073 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 [2021-06-12 18:54:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:16,074 INFO L225 Difference]: With dead ends: 318 [2021-06-12 18:54:16,074 INFO L226 Difference]: Without dead ends: 215 [2021-06-12 18:54:16,074 INFO L728 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 [2021-06-12 18:54:16,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-06-12 18:54:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-06-12 18:54:16,078 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) [2021-06-12 18:54:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 487 transitions. [2021-06-12 18:54:16,078 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 487 transitions. Word has length 26 [2021-06-12 18:54:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:16,078 INFO L482 AbstractCegarLoop]: Abstraction has 215 states and 487 transitions. [2021-06-12 18:54:16,078 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) [2021-06-12 18:54:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 487 transitions. [2021-06-12 18:54:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:16,079 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:16,079 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:16,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-06-12 18:54:16,079 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:16,079 INFO L82 PathProgramCache]: Analyzing trace with hash 37531698, now seen corresponding path program 410 times [2021-06-12 18:54:16,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:16,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932683771] [2021-06-12 18:54:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:16,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:16,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932683771] [2021-06-12 18:54:16,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932683771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:16,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:16,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:16,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979143759] [2021-06-12 18:54:16,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:16,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:16,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:16,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:16,138 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) [2021-06-12 18:54:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:16,265 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2021-06-12 18:54:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:16,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:16,266 INFO L225 Difference]: With dead ends: 325 [2021-06-12 18:54:16,266 INFO L226 Difference]: Without dead ends: 227 [2021-06-12 18:54:16,266 INFO L728 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 [2021-06-12 18:54:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-06-12 18:54:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-06-12 18:54:16,268 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) [2021-06-12 18:54:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 499 transitions. [2021-06-12 18:54:16,268 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 499 transitions. Word has length 26 [2021-06-12 18:54:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:16,268 INFO L482 AbstractCegarLoop]: Abstraction has 220 states and 499 transitions. [2021-06-12 18:54:16,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 499 transitions. [2021-06-12 18:54:16,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:16,268 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:16,269 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:16,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-06-12 18:54:16,269 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:16,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:16,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1354612848, now seen corresponding path program 411 times [2021-06-12 18:54:16,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:16,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340886689] [2021-06-12 18:54:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:16,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:16,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340886689] [2021-06-12 18:54:16,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340886689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:16,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:16,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:16,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626926889] [2021-06-12 18:54:16,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:16,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:16,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:16,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:16,326 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) [2021-06-12 18:54:16,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:16,451 INFO L93 Difference]: Finished difference Result 331 states and 761 transitions. [2021-06-12 18:54:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:16,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:16,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:16,452 INFO L225 Difference]: With dead ends: 331 [2021-06-12 18:54:16,452 INFO L226 Difference]: Without dead ends: 220 [2021-06-12 18:54:16,452 INFO L728 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 [2021-06-12 18:54:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-06-12 18:54:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-06-12 18:54:16,454 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) [2021-06-12 18:54:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 492 transitions. [2021-06-12 18:54:16,454 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 492 transitions. Word has length 26 [2021-06-12 18:54:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:16,454 INFO L482 AbstractCegarLoop]: Abstraction has 218 states and 492 transitions. [2021-06-12 18:54:16,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 492 transitions. [2021-06-12 18:54:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:16,454 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:16,454 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:16,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-06-12 18:54:16,455 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1023246392, now seen corresponding path program 412 times [2021-06-12 18:54:16,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:16,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378354151] [2021-06-12 18:54:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:16,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:16,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378354151] [2021-06-12 18:54:16,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378354151] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:16,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:16,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:16,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253892089] [2021-06-12 18:54:16,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:16,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:16,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:16,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:16,513 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) [2021-06-12 18:54:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:16,628 INFO L93 Difference]: Finished difference Result 313 states and 725 transitions. [2021-06-12 18:54:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:16,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:16,629 INFO L225 Difference]: With dead ends: 313 [2021-06-12 18:54:16,629 INFO L226 Difference]: Without dead ends: 199 [2021-06-12 18:54:16,629 INFO L728 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 [2021-06-12 18:54:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-06-12 18:54:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2021-06-12 18:54:16,630 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) [2021-06-12 18:54:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 451 transitions. [2021-06-12 18:54:16,631 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 451 transitions. Word has length 26 [2021-06-12 18:54:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:16,631 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 451 transitions. [2021-06-12 18:54:16,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:16,631 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 451 transitions. [2021-06-12 18:54:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:16,631 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:16,631 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:16,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-06-12 18:54:16,631 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1170207830, now seen corresponding path program 413 times [2021-06-12 18:54:16,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:16,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708758515] [2021-06-12 18:54:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:16,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:16,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708758515] [2021-06-12 18:54:16,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708758515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:16,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:16,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:16,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199923233] [2021-06-12 18:54:16,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:16,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:16,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:16,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:16,689 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) [2021-06-12 18:54:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:16,805 INFO L93 Difference]: Finished difference Result 296 states and 693 transitions. [2021-06-12 18:54:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:16,805 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:16,805 INFO L225 Difference]: With dead ends: 296 [2021-06-12 18:54:16,805 INFO L226 Difference]: Without dead ends: 191 [2021-06-12 18:54:16,805 INFO L728 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 [2021-06-12 18:54:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-06-12 18:54:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-06-12 18:54:16,807 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) [2021-06-12 18:54:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 441 transitions. [2021-06-12 18:54:16,807 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 441 transitions. Word has length 26 [2021-06-12 18:54:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:16,807 INFO L482 AbstractCegarLoop]: Abstraction has 191 states and 441 transitions. [2021-06-12 18:54:16,807 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) [2021-06-12 18:54:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 441 transitions. [2021-06-12 18:54:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:16,808 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:16,808 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:16,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-06-12 18:54:16,808 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:16,808 INFO L82 PathProgramCache]: Analyzing trace with hash -499961158, now seen corresponding path program 414 times [2021-06-12 18:54:16,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:16,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950542216] [2021-06-12 18:54:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:16,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:16,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950542216] [2021-06-12 18:54:16,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950542216] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:16,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:16,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:16,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259690228] [2021-06-12 18:54:16,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:16,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:16,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:16,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:16,875 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) [2021-06-12 18:54:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:16,991 INFO L93 Difference]: Finished difference Result 294 states and 685 transitions. [2021-06-12 18:54:16,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:16,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:16,992 INFO L225 Difference]: With dead ends: 294 [2021-06-12 18:54:16,992 INFO L226 Difference]: Without dead ends: 181 [2021-06-12 18:54:16,992 INFO L728 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 [2021-06-12 18:54:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-06-12 18:54:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-06-12 18:54:16,994 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) [2021-06-12 18:54:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 415 transitions. [2021-06-12 18:54:16,994 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 415 transitions. Word has length 26 [2021-06-12 18:54:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:16,994 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 415 transitions. [2021-06-12 18:54:16,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:54:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 415 transitions. [2021-06-12 18:54:16,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:16,994 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:16,994 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:16,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-06-12 18:54:16,995 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:16,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:16,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1892105704, now seen corresponding path program 415 times [2021-06-12 18:54:16,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:16,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433148869] [2021-06-12 18:54:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:17,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:17,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433148869] [2021-06-12 18:54:17,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433148869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:17,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:17,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:17,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053672418] [2021-06-12 18:54:17,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:17,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:17,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:17,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:17,057 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) [2021-06-12 18:54:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:17,167 INFO L93 Difference]: Finished difference Result 282 states and 659 transitions. [2021-06-12 18:54:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:17,167 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 [2021-06-12 18:54:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:17,168 INFO L225 Difference]: With dead ends: 282 [2021-06-12 18:54:17,168 INFO L226 Difference]: Without dead ends: 179 [2021-06-12 18:54:17,168 INFO L728 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 [2021-06-12 18:54:17,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-06-12 18:54:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-06-12 18:54:17,169 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) [2021-06-12 18:54:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 411 transitions. [2021-06-12 18:54:17,170 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 411 transitions. Word has length 26 [2021-06-12 18:54:17,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:17,170 INFO L482 AbstractCegarLoop]: Abstraction has 179 states and 411 transitions. [2021-06-12 18:54:17,170 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) [2021-06-12 18:54:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 411 transitions. [2021-06-12 18:54:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-12 18:54:17,170 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:54:17,170 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:54:17,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-06-12 18:54:17,170 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:54:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:54:17,170 INFO L82 PathProgramCache]: Analyzing trace with hash 493461030, now seen corresponding path program 416 times [2021-06-12 18:54:17,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:54:17,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046826577] [2021-06-12 18:54:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:54:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:54:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:54:17,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:54:17,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046826577] [2021-06-12 18:54:17,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046826577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:54:17,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:54:17,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 18:54:17,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217835368] [2021-06-12 18:54:17,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 18:54:17,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:54:17,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 18:54:17,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:17,270 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) [2021-06-12 18:54:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:54:17,362 INFO L93 Difference]: Finished difference Result 178 states and 410 transitions. [2021-06-12 18:54:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 18:54:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-12 18:54:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:54:17,363 INFO L225 Difference]: With dead ends: 178 [2021-06-12 18:54:17,363 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 18:54:17,363 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-12 18:54:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 18:54:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 18:54:17,363 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) [2021-06-12 18:54:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 18:54:17,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-06-12 18:54:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:54:17,363 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 18:54:17,363 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) [2021-06-12 18:54:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 18:54:17,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 18:54:17,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-06-12 18:54:17,365 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 18:54:17,367 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 06:54:17 BasicIcfg [2021-06-12 18:54:17,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 18:54:17,367 INFO L168 Benchmark]: Toolchain (without parser) took 98156.93 ms. Allocated memory was 201.3 MB in the beginning and 483.4 MB in the end (delta: 282.1 MB). Free memory was 180.5 MB in the beginning and 414.8 MB in the end (delta: -234.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-06-12 18:54:17,368 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 201.3 MB. Free memory is still 181.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:54:17,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.44 ms. Allocated memory is still 201.3 MB. Free memory was 180.5 MB in the beginning and 179.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 18:54:17,368 INFO L168 Benchmark]: Boogie Preprocessor took 8.15 ms. Allocated memory is still 201.3 MB. Free memory was 178.9 MB in the beginning and 178.2 MB in the end (delta: 782.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 18:54:17,368 INFO L168 Benchmark]: RCFGBuilder took 154.93 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 169.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-06-12 18:54:17,368 INFO L168 Benchmark]: TraceAbstraction took 97970.94 ms. Allocated memory was 201.3 MB in the beginning and 483.4 MB in the end (delta: 282.1 MB). Free memory was 169.1 MB in the beginning and 414.8 MB in the end (delta: -245.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2021-06-12 18:54:17,368 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 0.11 ms. Allocated memory is still 201.3 MB. Free memory is still 181.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.44 ms. Allocated memory is still 201.3 MB. Free memory was 180.5 MB in the beginning and 179.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 8.15 ms. Allocated memory is still 201.3 MB. Free memory was 178.9 MB in the beginning and 178.2 MB in the end (delta: 782.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 154.93 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 169.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 97970.94 ms. Allocated memory was 201.3 MB in the beginning and 483.4 MB in the end (delta: 282.1 MB). Free memory was 169.1 MB in the beginning and 414.8 MB in the end (delta: -245.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 6 procedures, 42 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 97816.2ms, OverallIterations: 418, TraceHistogramMax: 1, EmptinessCheckTime: 525.0ms, AutomataDifference: 65493.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 177.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33617 SDtfs, 21627 SDslu, 185475 SDs, 0 SdLazy, 149233 SolverSat, 3871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47691.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3750 GetRequests, 109 SyntacticMatches, 416 SemanticMatches, 3225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20250.2ms 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: 5485.9ms AutomataMinimizationTime, 418 MinimizatonAttempts, 33805 StatesRemovedByMinimization, 402 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 118.8ms SsaConstructionTime, 364.4ms SatisfiabilityAnalysisTime, 24448.0ms InterpolantComputationTime, 10868 NumberOfCodeBlocks, 10868 NumberOfCodeBlocksAsserted, 418 NumberOfCheckSat, 10450 ConstructedInterpolants, 0 QuantifiedInterpolants, 86678 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...