/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:51:24,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:51:24,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:51:24,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:51:24,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:51:24,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:51:24,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:51:24,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:51:24,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:51:24,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:51:24,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:51:24,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:51:24,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:51:24,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:51:24,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:51:24,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:51:24,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:51:24,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:51:24,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:51:24,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:51:24,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:51:24,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:51:24,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:51:24,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:51:24,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:51:24,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:51:24,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:51:24,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:51:24,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:51:24,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:51:24,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:51:24,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:51:24,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:51:24,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:51:24,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:51:24,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:51:24,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:51:24,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:51:24,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:51:24,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:51:24,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:51:24,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:51:24,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:51:24,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:51:24,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:51:24,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:51:24,663 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:51:24,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:51:24,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:51:24,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:51:24,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:51:24,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:51:24,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:51:24,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:51:24,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:51:24,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:51:24,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:51:24,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:51:24,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:51:24,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:51:24,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:51:24,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:51:24,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:51:24,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:51:24,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:51:24,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:51:24,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:51:24,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:51:24,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:51:24,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:51:24,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:51:24,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:51:24,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:51:24,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:51:25,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:51:25,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:51:25,010 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:51:25,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 13:51:25,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbd5dfab/3f394394c5ac4162bb9d198ebbe93d8a/FLAG754980eb1 [2020-10-13 13:51:25,668 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:51:25,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 13:51:25,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbd5dfab/3f394394c5ac4162bb9d198ebbe93d8a/FLAG754980eb1 [2020-10-13 13:51:25,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbd5dfab/3f394394c5ac4162bb9d198ebbe93d8a [2020-10-13 13:51:25,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:51:25,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:51:25,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:51:25,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:51:25,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:51:25,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:51:25" (1/1) ... [2020-10-13 13:51:25,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd6f99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:25, skipping insertion in model container [2020-10-13 13:51:25,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:51:25" (1/1) ... [2020-10-13 13:51:25,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:51:26,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:51:26,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:51:26,597 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:51:26,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:51:26,786 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:51:26,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26 WrapperNode [2020-10-13 13:51:26,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:51:26,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:51:26,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:51:26,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:51:26,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (1/1) ... [2020-10-13 13:51:26,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (1/1) ... [2020-10-13 13:51:26,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (1/1) ... [2020-10-13 13:51:26,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (1/1) ... [2020-10-13 13:51:26,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (1/1) ... [2020-10-13 13:51:26,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (1/1) ... [2020-10-13 13:51:26,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (1/1) ... [2020-10-13 13:51:26,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:51:26,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:51:26,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:51:26,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:51:26,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-13 13:51:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:51:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:51:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:51:27,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:51:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:51:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:51:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:51:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:51:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:51:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:51:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:51:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:51:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:51:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:51:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:51:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:51:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:51:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:51:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:51:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:51:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:51:28,366 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:51:28,366 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:51:28,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:51:28 BoogieIcfgContainer [2020-10-13 13:51:28,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:51:28,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:51:28,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:51:28,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:51:28,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:51:25" (1/3) ... [2020-10-13 13:51:28,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c480258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:51:28, skipping insertion in model container [2020-10-13 13:51:28,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:51:26" (2/3) ... [2020-10-13 13:51:28,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c480258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:51:28, skipping insertion in model container [2020-10-13 13:51:28,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:51:28" (3/3) ... [2020-10-13 13:51:28,382 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 13:51:28,394 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:51:28,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:51:28,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:51:28,446 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:51:28,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:51:28,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:51:28,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:51:28,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:51:28,448 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:51:28,448 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:51:28,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:51:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states. [2020-10-13 13:51:28,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 13:51:28,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:28,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:51:28,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:28,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:28,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1212431174, now seen corresponding path program 1 times [2020-10-13 13:51:28,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:28,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815936968] [2020-10-13 13:51:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:29,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:29,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:30,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:31,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:34,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 13:51:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:51:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 13:51:34,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:51:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:51:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:51:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:51:34,512 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:34,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:34,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:34,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:51:34,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:34,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815936968] [2020-10-13 13:51:34,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:34,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:51:34,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438615748] [2020-10-13 13:51:34,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:51:34,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:34,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:51:34,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:51:34,622 INFO L87 Difference]: Start difference. First operand 317 states. Second operand 5 states. [2020-10-13 13:51:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:38,353 INFO L93 Difference]: Finished difference Result 897 states and 1586 transitions. [2020-10-13 13:51:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:51:38,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-13 13:51:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:38,377 INFO L225 Difference]: With dead ends: 897 [2020-10-13 13:51:38,377 INFO L226 Difference]: Without dead ends: 601 [2020-10-13 13:51:38,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:51:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-13 13:51:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2020-10-13 13:51:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-10-13 13:51:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 868 transitions. [2020-10-13 13:51:38,525 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 868 transitions. Word has length 150 [2020-10-13 13:51:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:38,526 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 868 transitions. [2020-10-13 13:51:38,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:51:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 868 transitions. [2020-10-13 13:51:38,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 13:51:38,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:38,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:51:38,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:51:38,545 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:38,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:38,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1419499386, now seen corresponding path program 1 times [2020-10-13 13:51:38,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:38,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046462172] [2020-10-13 13:51:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:38,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:39,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:40,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:43,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:43,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 13:51:43,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:51:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 13:51:43,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:51:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:51:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:51:43,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 13:51:43,921 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:43,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:43,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:43,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:43,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:51:43,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:43,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046462172] [2020-10-13 13:51:43,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:43,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:51:43,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051214710] [2020-10-13 13:51:43,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:51:43,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:43,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:51:43,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:43,975 INFO L87 Difference]: Start difference. First operand 599 states and 868 transitions. Second operand 4 states. [2020-10-13 13:51:45,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:45,764 INFO L93 Difference]: Finished difference Result 1751 states and 2532 transitions. [2020-10-13 13:51:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:51:45,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-13 13:51:45,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:45,773 INFO L225 Difference]: With dead ends: 1751 [2020-10-13 13:51:45,773 INFO L226 Difference]: Without dead ends: 1184 [2020-10-13 13:51:45,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:45,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2020-10-13 13:51:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 601. [2020-10-13 13:51:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-10-13 13:51:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 870 transitions. [2020-10-13 13:51:45,835 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 870 transitions. Word has length 151 [2020-10-13 13:51:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:45,837 INFO L479 AbstractCegarLoop]: Abstraction has 601 states and 870 transitions. [2020-10-13 13:51:45,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:51:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 870 transitions. [2020-10-13 13:51:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 13:51:45,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:45,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:51:45,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:51:45,841 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash 496872507, now seen corresponding path program 1 times [2020-10-13 13:51:45,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:45,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133665867] [2020-10-13 13:51:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:48,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:50,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:50,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 13:51:50,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:51:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:51:50,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:51:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:51:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:51:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:51,222 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:51,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:51,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:51:51,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:51,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133665867] [2020-10-13 13:51:51,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:51,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:51:51,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910835405] [2020-10-13 13:51:51,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:51:51,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:51,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:51:51,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:51:51,291 INFO L87 Difference]: Start difference. First operand 601 states and 870 transitions. Second operand 5 states. [2020-10-13 13:51:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:52,731 INFO L93 Difference]: Finished difference Result 1184 states and 1714 transitions. [2020-10-13 13:51:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:51:52,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 13:51:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:52,737 INFO L225 Difference]: With dead ends: 1184 [2020-10-13 13:51:52,738 INFO L226 Difference]: Without dead ends: 601 [2020-10-13 13:51:52,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:51:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-13 13:51:52,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 600. [2020-10-13 13:51:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-13 13:51:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 866 transitions. [2020-10-13 13:51:52,842 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 866 transitions. Word has length 152 [2020-10-13 13:51:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:52,843 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 866 transitions. [2020-10-13 13:51:52,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:51:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 866 transitions. [2020-10-13 13:51:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 13:51:52,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:52,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:51:52,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:51:52,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:52,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1260966376, now seen corresponding path program 1 times [2020-10-13 13:51:52,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:52,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833617909] [2020-10-13 13:51:52,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:52,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:57,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:57,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:57,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:57,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 13:51:57,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:51:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:51:57,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:51:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:51:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 13:51:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:58,251 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:58,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:58,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:58,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:58,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:51:58,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:51:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:58,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833617909] [2020-10-13 13:51:58,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:58,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:51:58,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734835661] [2020-10-13 13:51:58,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:51:58,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:58,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:51:58,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:51:58,358 INFO L87 Difference]: Start difference. First operand 600 states and 866 transitions. Second operand 5 states. [2020-10-13 13:51:59,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:59,999 INFO L93 Difference]: Finished difference Result 1462 states and 2105 transitions. [2020-10-13 13:51:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:00,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 13:52:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:00,006 INFO L225 Difference]: With dead ends: 1462 [2020-10-13 13:52:00,007 INFO L226 Difference]: Without dead ends: 885 [2020-10-13 13:52:00,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-10-13 13:52:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2020-10-13 13:52:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-13 13:52:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1257 transitions. [2020-10-13 13:52:00,090 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1257 transitions. Word has length 152 [2020-10-13 13:52:00,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:00,091 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1257 transitions. [2020-10-13 13:52:00,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:00,091 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1257 transitions. [2020-10-13 13:52:00,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 13:52:00,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:00,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:00,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:52:00,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash 603680509, now seen corresponding path program 1 times [2020-10-13 13:52:00,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:00,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883593474] [2020-10-13 13:52:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:00,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:01,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:05,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:05,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 13:52:05,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:52:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 13:52:05,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:52:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:52:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 13:52:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:05,440 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:05,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:05,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:52:05,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:52:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:52:05,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:52:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:05,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883593474] [2020-10-13 13:52:05,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:05,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:05,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508898941] [2020-10-13 13:52:05,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:52:05,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:05,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:52:05,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:05,528 INFO L87 Difference]: Start difference. First operand 883 states and 1257 transitions. Second operand 6 states. [2020-10-13 13:52:05,758 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 13:52:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:07,233 INFO L93 Difference]: Finished difference Result 2167 states and 3150 transitions. [2020-10-13 13:52:07,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:52:07,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-10-13 13:52:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:07,242 INFO L225 Difference]: With dead ends: 2167 [2020-10-13 13:52:07,243 INFO L226 Difference]: Without dead ends: 1452 [2020-10-13 13:52:07,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:52:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2020-10-13 13:52:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1450. [2020-10-13 13:52:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-10-13 13:52:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2091 transitions. [2020-10-13 13:52:07,360 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2091 transitions. Word has length 160 [2020-10-13 13:52:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:07,361 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 2091 transitions. [2020-10-13 13:52:07,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:52:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2091 transitions. [2020-10-13 13:52:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 13:52:07,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:07,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:07,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:52:07,366 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:07,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:07,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1557108839, now seen corresponding path program 1 times [2020-10-13 13:52:07,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:07,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218386333] [2020-10-13 13:52:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:11,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:12,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 13:52:12,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:52:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:52:12,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:52:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 13:52:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:12,714 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:12,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:12,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:52:12,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:12,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218386333] [2020-10-13 13:52:12,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:12,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:12,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791729788] [2020-10-13 13:52:12,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:12,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:12,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:12,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:12,795 INFO L87 Difference]: Start difference. First operand 1450 states and 2091 transitions. Second operand 5 states. [2020-10-13 13:52:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:15,031 INFO L93 Difference]: Finished difference Result 4196 states and 6034 transitions. [2020-10-13 13:52:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:15,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 13:52:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:15,046 INFO L225 Difference]: With dead ends: 4196 [2020-10-13 13:52:15,046 INFO L226 Difference]: Without dead ends: 2787 [2020-10-13 13:52:15,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2020-10-13 13:52:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2020-10-13 13:52:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2020-10-13 13:52:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3967 transitions. [2020-10-13 13:52:15,228 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3967 transitions. Word has length 160 [2020-10-13 13:52:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:15,229 INFO L479 AbstractCegarLoop]: Abstraction has 2785 states and 3967 transitions. [2020-10-13 13:52:15,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3967 transitions. [2020-10-13 13:52:15,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 13:52:15,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:15,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:15,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:52:15,236 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:15,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:15,237 INFO L82 PathProgramCache]: Analyzing trace with hash -407638567, now seen corresponding path program 1 times [2020-10-13 13:52:15,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:15,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23672677] [2020-10-13 13:52:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:15,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:16,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:17,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:20,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:20,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 13:52:20,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 13:52:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:52:20,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:52:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:52:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:52:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:20,457 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:20,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:20,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:20,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:52:20,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:20,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23672677] [2020-10-13 13:52:20,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:20,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:52:20,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358092107] [2020-10-13 13:52:20,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:52:20,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:52:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:52:20,504 INFO L87 Difference]: Start difference. First operand 2785 states and 3967 transitions. Second operand 4 states. [2020-10-13 13:52:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:22,946 INFO L93 Difference]: Finished difference Result 8249 states and 11746 transitions. [2020-10-13 13:52:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:52:22,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-13 13:52:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:22,971 INFO L225 Difference]: With dead ends: 8249 [2020-10-13 13:52:22,972 INFO L226 Difference]: Without dead ends: 5526 [2020-10-13 13:52:22,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:52:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2020-10-13 13:52:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 2791. [2020-10-13 13:52:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-10-13 13:52:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3973 transitions. [2020-10-13 13:52:23,197 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3973 transitions. Word has length 161 [2020-10-13 13:52:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:23,197 INFO L479 AbstractCegarLoop]: Abstraction has 2791 states and 3973 transitions. [2020-10-13 13:52:23,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:52:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3973 transitions. [2020-10-13 13:52:23,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 13:52:23,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:23,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:23,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:52:23,204 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:23,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1724488057, now seen corresponding path program 1 times [2020-10-13 13:52:23,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:23,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645660675] [2020-10-13 13:52:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:28,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:28,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 13:52:28,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:52:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:52:28,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:52:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:52:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 13:52:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:28,428 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:28,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:28,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:28,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:28,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:52:28,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:28,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:28,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645660675] [2020-10-13 13:52:28,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:28,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:52:28,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641387877] [2020-10-13 13:52:28,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:52:28,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:28,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:52:28,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:52:28,492 INFO L87 Difference]: Start difference. First operand 2791 states and 3973 transitions. Second operand 4 states. [2020-10-13 13:52:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:30,868 INFO L93 Difference]: Finished difference Result 7227 states and 10318 transitions. [2020-10-13 13:52:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:52:30,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-13 13:52:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:30,887 INFO L225 Difference]: With dead ends: 7227 [2020-10-13 13:52:30,888 INFO L226 Difference]: Without dead ends: 4884 [2020-10-13 13:52:30,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:52:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2020-10-13 13:52:31,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 4882. [2020-10-13 13:52:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4882 states. [2020-10-13 13:52:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 6838 transitions. [2020-10-13 13:52:31,252 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 6838 transitions. Word has length 162 [2020-10-13 13:52:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:31,253 INFO L479 AbstractCegarLoop]: Abstraction has 4882 states and 6838 transitions. [2020-10-13 13:52:31,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:52:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 6838 transitions. [2020-10-13 13:52:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 13:52:31,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:31,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:31,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:52:31,264 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:31,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:31,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1327516822, now seen corresponding path program 1 times [2020-10-13 13:52:31,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:31,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584959964] [2020-10-13 13:52:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:31,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:33,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:33,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:34,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:35,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:36,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 13:52:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:52:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:52:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:52:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:52:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:36,551 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:36,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:36,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:36,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:36,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:36,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:52:36,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:36,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:52:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:36,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584959964] [2020-10-13 13:52:36,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:36,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:36,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282051526] [2020-10-13 13:52:36,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:36,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:36,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:36,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:36,629 INFO L87 Difference]: Start difference. First operand 4882 states and 6838 transitions. Second operand 5 states. [2020-10-13 13:52:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:38,270 INFO L93 Difference]: Finished difference Result 10326 states and 14283 transitions. [2020-10-13 13:52:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:38,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-13 13:52:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:38,287 INFO L225 Difference]: With dead ends: 10326 [2020-10-13 13:52:38,288 INFO L226 Difference]: Without dead ends: 5228 [2020-10-13 13:52:38,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2020-10-13 13:52:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 5226. [2020-10-13 13:52:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5226 states. [2020-10-13 13:52:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5226 states to 5226 states and 7165 transitions. [2020-10-13 13:52:38,659 INFO L78 Accepts]: Start accepts. Automaton has 5226 states and 7165 transitions. Word has length 162 [2020-10-13 13:52:38,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:38,660 INFO L479 AbstractCegarLoop]: Abstraction has 5226 states and 7165 transitions. [2020-10-13 13:52:38,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5226 states and 7165 transitions. [2020-10-13 13:52:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 13:52:38,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:38,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:38,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:52:38,670 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:38,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1000467496, now seen corresponding path program 1 times [2020-10-13 13:52:38,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:38,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507166218] [2020-10-13 13:52:38,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:38,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:43,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:43,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 13:52:43,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:52:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:52:43,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:52:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 13:52:43,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:43,959 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:43,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:43,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:43,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:43,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:52:43,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:43,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:43,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:44,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507166218] [2020-10-13 13:52:44,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:44,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:44,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500210080] [2020-10-13 13:52:44,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:44,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:44,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:44,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:44,012 INFO L87 Difference]: Start difference. First operand 5226 states and 7165 transitions. Second operand 5 states. [2020-10-13 13:52:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:45,435 INFO L93 Difference]: Finished difference Result 9969 states and 13761 transitions. [2020-10-13 13:52:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:45,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-13 13:52:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:45,456 INFO L225 Difference]: With dead ends: 9969 [2020-10-13 13:52:45,456 INFO L226 Difference]: Without dead ends: 5005 [2020-10-13 13:52:45,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5005 states. [2020-10-13 13:52:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5005 to 4994. [2020-10-13 13:52:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4994 states. [2020-10-13 13:52:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 6887 transitions. [2020-10-13 13:52:45,738 INFO L78 Accepts]: Start accepts. Automaton has 4994 states and 6887 transitions. Word has length 162 [2020-10-13 13:52:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:45,738 INFO L479 AbstractCegarLoop]: Abstraction has 4994 states and 6887 transitions. [2020-10-13 13:52:45,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4994 states and 6887 transitions. [2020-10-13 13:52:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 13:52:45,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:45,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:45,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:52:45,749 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:45,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:45,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1743780148, now seen corresponding path program 1 times [2020-10-13 13:52:45,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:45,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423657713] [2020-10-13 13:52:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:45,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:46,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:46,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:48,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:49,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:50,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:50,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 13:52:50,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 13:52:50,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:52:50,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:52:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:52:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:52:50,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:50,977 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:50,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:50,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:50,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:50,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:52:50,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:50,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:51,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423657713] [2020-10-13 13:52:51,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:51,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:52:51,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271877088] [2020-10-13 13:52:51,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:52:51,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:51,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:52:51,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:52:51,014 INFO L87 Difference]: Start difference. First operand 4994 states and 6887 transitions. Second operand 4 states. [2020-10-13 13:52:52,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:52,871 INFO L93 Difference]: Finished difference Result 11882 states and 16369 transitions. [2020-10-13 13:52:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:52:52,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-13 13:52:52,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:52,893 INFO L225 Difference]: With dead ends: 11882 [2020-10-13 13:52:52,893 INFO L226 Difference]: Without dead ends: 9849 [2020-10-13 13:52:52,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:52:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9849 states. [2020-10-13 13:52:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9849 to 5006. [2020-10-13 13:52:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5006 states. [2020-10-13 13:52:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 6899 transitions. [2020-10-13 13:52:53,295 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 6899 transitions. Word has length 163 [2020-10-13 13:52:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:53,296 INFO L479 AbstractCegarLoop]: Abstraction has 5006 states and 6899 transitions. [2020-10-13 13:52:53,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:52:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 6899 transitions. [2020-10-13 13:52:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 13:52:53,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:53,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:53,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:52:53,304 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:53,304 INFO L82 PathProgramCache]: Analyzing trace with hash 245580119, now seen corresponding path program 1 times [2020-10-13 13:52:53,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:53,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312806528] [2020-10-13 13:52:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:53,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 13:52:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:52:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 13:52:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:52:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:52:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:58,626 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:58,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:58,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:58,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:58,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:52:58,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:58,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:58,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312806528] [2020-10-13 13:52:58,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:58,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:58,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761113224] [2020-10-13 13:52:58,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:58,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:58,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:58,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:58,672 INFO L87 Difference]: Start difference. First operand 5006 states and 6899 transitions. Second operand 5 states. [2020-10-13 13:53:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:00,753 INFO L93 Difference]: Finished difference Result 13575 states and 18629 transitions. [2020-10-13 13:53:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:00,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 13:53:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:00,779 INFO L225 Difference]: With dead ends: 13575 [2020-10-13 13:53:00,779 INFO L226 Difference]: Without dead ends: 9608 [2020-10-13 13:53:00,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:53:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9608 states. [2020-10-13 13:53:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9608 to 5044. [2020-10-13 13:53:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5044 states. [2020-10-13 13:53:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 6938 transitions. [2020-10-13 13:53:01,199 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 6938 transitions. Word has length 164 [2020-10-13 13:53:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:01,200 INFO L479 AbstractCegarLoop]: Abstraction has 5044 states and 6938 transitions. [2020-10-13 13:53:01,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:53:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 6938 transitions. [2020-10-13 13:53:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 13:53:01,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:01,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:01,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:53:01,206 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:01,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1875844887, now seen corresponding path program 1 times [2020-10-13 13:53:01,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:01,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226149041] [2020-10-13 13:53:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:01,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:06,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:06,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 13:53:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:53:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:53:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:53:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:53:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:53:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:06,465 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:53:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:06,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:06,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:06,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:53:06,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:06,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226149041] [2020-10-13 13:53:06,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:06,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:53:06,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231578463] [2020-10-13 13:53:06,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:53:06,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:06,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:53:06,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:06,510 INFO L87 Difference]: Start difference. First operand 5044 states and 6938 transitions. Second operand 5 states. [2020-10-13 13:53:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:07,901 INFO L93 Difference]: Finished difference Result 6351 states and 8739 transitions. [2020-10-13 13:53:07,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:07,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 13:53:07,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:07,912 INFO L225 Difference]: With dead ends: 6351 [2020-10-13 13:53:07,913 INFO L226 Difference]: Without dead ends: 4294 [2020-10-13 13:53:07,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:53:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-10-13 13:53:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4274. [2020-10-13 13:53:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4274 states. [2020-10-13 13:53:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 5903 transitions. [2020-10-13 13:53:08,332 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 5903 transitions. Word has length 164 [2020-10-13 13:53:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:08,332 INFO L479 AbstractCegarLoop]: Abstraction has 4274 states and 5903 transitions. [2020-10-13 13:53:08,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:53:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 5903 transitions. [2020-10-13 13:53:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 13:53:08,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:08,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:08,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:53:08,337 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:08,337 INFO L82 PathProgramCache]: Analyzing trace with hash -862960803, now seen corresponding path program 1 times [2020-10-13 13:53:08,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:08,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200750160] [2020-10-13 13:53:08,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:13,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:53:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:53:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:53:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:53:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:53:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 13:53:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:13,712 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:53:13,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:13,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:13,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:13,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:13,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:53:13,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:13,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:13,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:13,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200750160] [2020-10-13 13:53:13,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:13,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:53:13,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762866146] [2020-10-13 13:53:13,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:53:13,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:13,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:53:13,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:13,757 INFO L87 Difference]: Start difference. First operand 4274 states and 5903 transitions. Second operand 5 states. [2020-10-13 13:53:16,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:16,085 INFO L93 Difference]: Finished difference Result 9756 states and 13561 transitions. [2020-10-13 13:53:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:16,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 13:53:16,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:16,097 INFO L225 Difference]: With dead ends: 9756 [2020-10-13 13:53:16,097 INFO L226 Difference]: Without dead ends: 5892 [2020-10-13 13:53:16,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:53:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2020-10-13 13:53:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5890. [2020-10-13 13:53:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5890 states. [2020-10-13 13:53:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8039 transitions. [2020-10-13 13:53:16,682 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8039 transitions. Word has length 168 [2020-10-13 13:53:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:16,683 INFO L479 AbstractCegarLoop]: Abstraction has 5890 states and 8039 transitions. [2020-10-13 13:53:16,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:53:16,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8039 transitions. [2020-10-13 13:53:16,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 13:53:16,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:16,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:16,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:53:16,688 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:16,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:16,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1246346401, now seen corresponding path program 1 times [2020-10-13 13:53:16,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:16,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516379732] [2020-10-13 13:53:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:16,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:17,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:21,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 13:53:21,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:53:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:53:21,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:53:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-13 13:53:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:53:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:21,937 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:53:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:21,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:21,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:53:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:21,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516379732] [2020-10-13 13:53:21,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:21,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:53:21,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778483297] [2020-10-13 13:53:21,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:53:21,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:21,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:53:21,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:21,979 INFO L87 Difference]: Start difference. First operand 5890 states and 8039 transitions. Second operand 4 states. [2020-10-13 13:53:22,192 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 13:53:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:24,386 INFO L93 Difference]: Finished difference Result 15262 states and 21219 transitions. [2020-10-13 13:53:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:24,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-13 13:53:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:24,404 INFO L225 Difference]: With dead ends: 15262 [2020-10-13 13:53:24,404 INFO L226 Difference]: Without dead ends: 10952 [2020-10-13 13:53:24,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10952 states. [2020-10-13 13:53:25,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10952 to 10950. [2020-10-13 13:53:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10950 states. [2020-10-13 13:53:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10950 states to 10950 states and 14977 transitions. [2020-10-13 13:53:25,191 INFO L78 Accepts]: Start accepts. Automaton has 10950 states and 14977 transitions. Word has length 170 [2020-10-13 13:53:25,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:25,192 INFO L479 AbstractCegarLoop]: Abstraction has 10950 states and 14977 transitions. [2020-10-13 13:53:25,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:53:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 10950 states and 14977 transitions. [2020-10-13 13:53:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 13:53:25,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:25,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:25,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:53:25,201 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:25,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1128680484, now seen corresponding path program 1 times [2020-10-13 13:53:25,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:25,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351879204] [2020-10-13 13:53:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:25,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:25,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:30,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:30,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 13:53:30,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:53:30,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:53:30,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:30,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:53:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:53:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:53:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:30,448 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:53:30,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:30,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:30,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:30,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:53:30,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:30,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351879204] [2020-10-13 13:53:30,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:30,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:53:30,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142170112] [2020-10-13 13:53:30,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:53:30,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:53:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:30,511 INFO L87 Difference]: Start difference. First operand 10950 states and 14977 transitions. Second operand 4 states. [2020-10-13 13:53:34,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:34,253 INFO L93 Difference]: Finished difference Result 30230 states and 41521 transitions. [2020-10-13 13:53:34,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:53:34,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-13 13:53:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:34,283 INFO L225 Difference]: With dead ends: 30230 [2020-10-13 13:53:34,284 INFO L226 Difference]: Without dead ends: 20692 [2020-10-13 13:53:34,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20692 states. [2020-10-13 13:53:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20692 to 20690. [2020-10-13 13:53:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20690 states. [2020-10-13 13:53:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20690 states to 20690 states and 27971 transitions. [2020-10-13 13:53:36,422 INFO L78 Accepts]: Start accepts. Automaton has 20690 states and 27971 transitions. Word has length 170 [2020-10-13 13:53:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:36,423 INFO L479 AbstractCegarLoop]: Abstraction has 20690 states and 27971 transitions. [2020-10-13 13:53:36,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:53:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 20690 states and 27971 transitions. [2020-10-13 13:53:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 13:53:36,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:36,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:36,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:53:36,438 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:36,438 INFO L82 PathProgramCache]: Analyzing trace with hash -273272775, now seen corresponding path program 1 times [2020-10-13 13:53:36,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:36,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725384721] [2020-10-13 13:53:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:36,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:36,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:41,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:41,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:41,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 13:53:41,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:53:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:53:41,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:53:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:53:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:53:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:41,728 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:53:41,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:41,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:41,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:41,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:41,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:53:41,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:41,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:41,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725384721] [2020-10-13 13:53:41,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:41,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:53:41,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187670702] [2020-10-13 13:53:41,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:53:41,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:41,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:53:41,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:41,764 INFO L87 Difference]: Start difference. First operand 20690 states and 27971 transitions. Second operand 5 states. [2020-10-13 13:53:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:45,827 INFO L93 Difference]: Finished difference Result 46342 states and 62775 transitions. [2020-10-13 13:53:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:45,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 13:53:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:45,858 INFO L225 Difference]: With dead ends: 46342 [2020-10-13 13:53:45,859 INFO L226 Difference]: Without dead ends: 31118 [2020-10-13 13:53:45,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31118 states. [2020-10-13 13:53:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31118 to 20678. [2020-10-13 13:53:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20678 states. [2020-10-13 13:53:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20678 states to 20678 states and 27953 transitions. [2020-10-13 13:53:47,351 INFO L78 Accepts]: Start accepts. Automaton has 20678 states and 27953 transitions. Word has length 170 [2020-10-13 13:53:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:47,351 INFO L479 AbstractCegarLoop]: Abstraction has 20678 states and 27953 transitions. [2020-10-13 13:53:47,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:53:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 20678 states and 27953 transitions. [2020-10-13 13:53:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 13:53:47,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:47,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:47,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:53:47,367 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:47,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1619508940, now seen corresponding path program 1 times [2020-10-13 13:53:47,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:47,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048129265] [2020-10-13 13:53:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:47,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:52,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:52,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 13:53:52,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:53:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:53:52,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:53:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:53:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:53:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:52,595 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:53:52,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:52,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:52,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:52,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:52,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:53:52,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:52,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048129265] [2020-10-13 13:53:52,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:52,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:53:52,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714789907] [2020-10-13 13:53:52,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:53:52,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:52,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:53:52,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:52,639 INFO L87 Difference]: Start difference. First operand 20678 states and 27953 transitions. Second operand 4 states. [2020-10-13 13:53:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:56,444 INFO L93 Difference]: Finished difference Result 33771 states and 45626 transitions. [2020-10-13 13:53:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:53:56,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-13 13:53:56,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:56,477 INFO L225 Difference]: With dead ends: 33771 [2020-10-13 13:53:56,477 INFO L226 Difference]: Without dead ends: 26345 [2020-10-13 13:53:56,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26345 states. [2020-10-13 13:53:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26345 to 20557. [2020-10-13 13:53:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20557 states. [2020-10-13 13:53:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20557 states to 20557 states and 27815 transitions. [2020-10-13 13:53:58,134 INFO L78 Accepts]: Start accepts. Automaton has 20557 states and 27815 transitions. Word has length 171 [2020-10-13 13:53:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:58,134 INFO L479 AbstractCegarLoop]: Abstraction has 20557 states and 27815 transitions. [2020-10-13 13:53:58,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:53:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 20557 states and 27815 transitions. [2020-10-13 13:53:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 13:53:58,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:58,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:58,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:53:58,147 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1581857918, now seen corresponding path program 1 times [2020-10-13 13:53:58,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:58,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743786460] [2020-10-13 13:53:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:58,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:00,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:00,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:03,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:03,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 13:54:03,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:54:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:54:03,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:54:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:54:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:03,419 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:54:03,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:03,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:03,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:03,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:03,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:54:03,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:03,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743786460] [2020-10-13 13:54:03,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:03,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:03,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980671958] [2020-10-13 13:54:03,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:03,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:03,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:03,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:03,471 INFO L87 Difference]: Start difference. First operand 20557 states and 27815 transitions. Second operand 5 states. [2020-10-13 13:54:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:06,130 INFO L93 Difference]: Finished difference Result 31919 states and 43279 transitions. [2020-10-13 13:54:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:06,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 13:54:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:06,147 INFO L225 Difference]: With dead ends: 31919 [2020-10-13 13:54:06,147 INFO L226 Difference]: Without dead ends: 16893 [2020-10-13 13:54:06,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16893 states. [2020-10-13 13:54:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16893 to 16887. [2020-10-13 13:54:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16887 states. [2020-10-13 13:54:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16887 states to 16887 states and 22783 transitions. [2020-10-13 13:54:07,412 INFO L78 Accepts]: Start accepts. Automaton has 16887 states and 22783 transitions. Word has length 172 [2020-10-13 13:54:07,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:07,412 INFO L479 AbstractCegarLoop]: Abstraction has 16887 states and 22783 transitions. [2020-10-13 13:54:07,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 16887 states and 22783 transitions. [2020-10-13 13:54:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 13:54:07,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:07,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:54:07,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:54:07,421 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:07,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:07,422 INFO L82 PathProgramCache]: Analyzing trace with hash -156841065, now seen corresponding path program 1 times [2020-10-13 13:54:07,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:07,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837153387] [2020-10-13 13:54:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:07,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:07,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:07,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:08,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:12,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:12,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 13:54:12,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:54:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:54:12,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:54:12,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:54:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:12,687 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:54:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:12,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:12,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:54:12,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:12,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837153387] [2020-10-13 13:54:12,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:12,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:12,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582703634] [2020-10-13 13:54:12,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:12,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:12,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:12,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:12,732 INFO L87 Difference]: Start difference. First operand 16887 states and 22783 transitions. Second operand 5 states. [2020-10-13 13:54:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:16,119 INFO L93 Difference]: Finished difference Result 22677 states and 30605 transitions. [2020-10-13 13:54:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:16,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-13 13:54:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:16,138 INFO L225 Difference]: With dead ends: 22677 [2020-10-13 13:54:16,138 INFO L226 Difference]: Without dead ends: 16889 [2020-10-13 13:54:16,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16889 states. [2020-10-13 13:54:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16889 to 16795. [2020-10-13 13:54:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16795 states. [2020-10-13 13:54:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16795 states to 16795 states and 22661 transitions. [2020-10-13 13:54:17,445 INFO L78 Accepts]: Start accepts. Automaton has 16795 states and 22661 transitions. Word has length 176 [2020-10-13 13:54:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:17,445 INFO L479 AbstractCegarLoop]: Abstraction has 16795 states and 22661 transitions. [2020-10-13 13:54:17,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 16795 states and 22661 transitions. [2020-10-13 13:54:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 13:54:17,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:17,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:54:17,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:54:17,455 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:17,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:17,456 INFO L82 PathProgramCache]: Analyzing trace with hash -457560947, now seen corresponding path program 1 times [2020-10-13 13:54:17,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:17,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947685842] [2020-10-13 13:54:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:19,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:21,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:22,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:54:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:54:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:54:22,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:54:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 13:54:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:54:22,836 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:54:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:22,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:22,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:22,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:54:22,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:22,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:54:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:22,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947685842] [2020-10-13 13:54:22,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:22,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:22,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702203103] [2020-10-13 13:54:22,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:22,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:22,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:22,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:22,949 INFO L87 Difference]: Start difference. First operand 16795 states and 22661 transitions. Second operand 5 states. [2020-10-13 13:54:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:25,852 INFO L93 Difference]: Finished difference Result 26386 states and 35778 transitions. [2020-10-13 13:54:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:25,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-13 13:54:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:25,869 INFO L225 Difference]: With dead ends: 26386 [2020-10-13 13:54:25,869 INFO L226 Difference]: Without dead ends: 15064 [2020-10-13 13:54:25,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15064 states. [2020-10-13 13:54:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15064 to 14870. [2020-10-13 13:54:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14870 states. [2020-10-13 13:54:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14870 states to 14870 states and 19999 transitions. [2020-10-13 13:54:27,213 INFO L78 Accepts]: Start accepts. Automaton has 14870 states and 19999 transitions. Word has length 178 [2020-10-13 13:54:27,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:27,213 INFO L479 AbstractCegarLoop]: Abstraction has 14870 states and 19999 transitions. [2020-10-13 13:54:27,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:27,214 INFO L276 IsEmpty]: Start isEmpty. Operand 14870 states and 19999 transitions. [2020-10-13 13:54:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 13:54:27,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:27,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:54:27,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:54:27,222 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:27,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:27,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1788270855, now seen corresponding path program 1 times [2020-10-13 13:54:27,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:27,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214544591] [2020-10-13 13:54:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:27,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:27,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:28,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:29,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:32,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:32,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 13:54:32,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:54:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 13:54:32,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:32,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:54:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 13:54:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:54:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:32,500 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:54:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:32,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:32,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:32,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:32,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:54:32,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:32,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214544591] [2020-10-13 13:54:32,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:32,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:54:32,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713019395] [2020-10-13 13:54:32,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:54:32,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:32,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:54:32,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:54:32,537 INFO L87 Difference]: Start difference. First operand 14870 states and 19999 transitions. Second operand 4 states. [2020-10-13 13:54:32,734 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 13:54:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:36,525 INFO L93 Difference]: Finished difference Result 39180 states and 53461 transitions. [2020-10-13 13:54:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:36,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2020-10-13 13:54:36,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:36,558 INFO L225 Difference]: With dead ends: 39180 [2020-10-13 13:54:36,558 INFO L226 Difference]: Without dead ends: 28176 [2020-10-13 13:54:36,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28176 states. [2020-10-13 13:54:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28176 to 28174. [2020-10-13 13:54:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28174 states. [2020-10-13 13:54:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28174 states to 28174 states and 37783 transitions. [2020-10-13 13:54:38,997 INFO L78 Accepts]: Start accepts. Automaton has 28174 states and 37783 transitions. Word has length 180 [2020-10-13 13:54:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:38,997 INFO L479 AbstractCegarLoop]: Abstraction has 28174 states and 37783 transitions. [2020-10-13 13:54:38,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:54:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 28174 states and 37783 transitions. [2020-10-13 13:54:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 13:54:39,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:39,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:54:39,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:54:39,017 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:39,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:39,017 INFO L82 PathProgramCache]: Analyzing trace with hash -336770676, now seen corresponding path program 1 times [2020-10-13 13:54:39,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:39,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793875391] [2020-10-13 13:54:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:39,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:40,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:44,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 13:54:44,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:54:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:54:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:54:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 13:54:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 13:54:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:44,625 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:54:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:44,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:44,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:54:44,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:44,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793875391] [2020-10-13 13:54:44,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:44,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:54:44,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298808021] [2020-10-13 13:54:44,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:54:44,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:44,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:54:44,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:54:44,690 INFO L87 Difference]: Start difference. First operand 28174 states and 37783 transitions. Second operand 12 states. [2020-10-13 13:54:45,257 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 190