/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.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:59:50,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:59:50,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:59:50,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:59:50,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:59:50,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:59:50,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:59:50,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:59:50,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:59:50,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:59:50,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:59:50,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:59:50,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:59:50,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:59:50,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:59:50,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:59:50,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:59:50,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:59:50,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:59:50,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:59:50,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:59:50,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:59:50,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:59:50,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:59:50,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:59:50,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:59:50,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:59:50,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:59:50,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:59:50,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:59:50,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:59:50,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:59:50,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:59:50,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:59:50,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:59:50,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:59:50,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:59:50,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:59:50,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:59:50,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:59:50,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:59:50,701 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 13:59:50,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:59:50,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:59:50,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:59:50,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:59:50,728 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:59:50,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:59:50,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:59:50,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:59:50,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:59:50,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:59:50,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:59:50,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:59:50,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:59:50,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:59:50,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:59:50,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:59:50,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:59:50,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:59:50,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:59:50,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:59:50,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:59:50,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:59:50,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:59:50,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:59:50,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:59:50,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:59:50,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:59:50,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:59:50,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:59:50,733 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 13:59:51,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:59:51,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:59:51,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:59:51,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:59:51,057 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:59:51,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 13:59:51,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb7e39bce/79dc60a7b9014421bade7c551d332350/FLAGb627e4119 [2020-10-13 13:59:51,846 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:59:51,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 13:59:51,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb7e39bce/79dc60a7b9014421bade7c551d332350/FLAGb627e4119 [2020-10-13 13:59:51,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb7e39bce/79dc60a7b9014421bade7c551d332350 [2020-10-13 13:59:51,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:59:51,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:59:51,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:59:51,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:59:51,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:59:51,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:59:51" (1/1) ... [2020-10-13 13:59:51,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a9c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:51, skipping insertion in model container [2020-10-13 13:59:51,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:59:51" (1/1) ... [2020-10-13 13:59:51,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:59:52,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:59:53,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:59:53,149 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:59:53,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:59:53,622 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:59:53,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53 WrapperNode [2020-10-13 13:59:53,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:59:53,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:59:53,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:59:53,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:59:53,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (1/1) ... [2020-10-13 13:59:53,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (1/1) ... [2020-10-13 13:59:53,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (1/1) ... [2020-10-13 13:59:53,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (1/1) ... [2020-10-13 13:59:53,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (1/1) ... [2020-10-13 13:59:53,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (1/1) ... [2020-10-13 13:59:53,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (1/1) ... [2020-10-13 13:59:53,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:59:53,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:59:53,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:59:53,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:59:53,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (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 13:59:53,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:59:53,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:59:53,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:59:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:59:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:59:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:59:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:59:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:59:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:59:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:59:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:59:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:59:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:59:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:59:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:59:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:59:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:59:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:59:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:59:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:59:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:59:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:59:56,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:59:56,497 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:59:56,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:59:56 BoogieIcfgContainer [2020-10-13 13:59:56,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:59:56,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:59:56,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:59:56,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:59:56,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:59:51" (1/3) ... [2020-10-13 13:59:56,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a54122e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:59:56, skipping insertion in model container [2020-10-13 13:59:56,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:59:53" (2/3) ... [2020-10-13 13:59:56,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a54122e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:59:56, skipping insertion in model container [2020-10-13 13:59:56,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:59:56" (3/3) ... [2020-10-13 13:59:56,515 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 13:59:56,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:59:56,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:59:56,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:59:56,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:59:56,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:59:56,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:59:56,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:59:56,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:59:56,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:59:56,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:59:56,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:59:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states. [2020-10-13 13:59:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 13:59:56,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:56,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:56,636 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:56,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:56,643 INFO L82 PathProgramCache]: Analyzing trace with hash 373838738, now seen corresponding path program 1 times [2020-10-13 13:59:56,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:56,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754612375] [2020-10-13 13:59:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:59,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:00,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:02,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 14:00:02,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:00:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-13 14:00:02,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:00:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:00:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 14:00:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 14:00:03,648 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:00:03,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:03,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:03,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:03,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:00:03,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:03,877 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 14:00:03,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754612375] [2020-10-13 14:00:03,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:03,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:00:03,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305600148] [2020-10-13 14:00:03,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:00:03,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:03,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:00:03,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:03,905 INFO L87 Difference]: Start difference. First operand 737 states. Second operand 5 states. [2020-10-13 14:00:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:12,199 INFO L93 Difference]: Finished difference Result 2163 states and 3852 transitions. [2020-10-13 14:00:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:00:12,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 14:00:12,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:12,237 INFO L225 Difference]: With dead ends: 2163 [2020-10-13 14:00:12,237 INFO L226 Difference]: Without dead ends: 1433 [2020-10-13 14:00:12,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:00:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-13 14:00:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1431. [2020-10-13 14:00:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-10-13 14:00:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2205 transitions. [2020-10-13 14:00:12,417 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2205 transitions. Word has length 314 [2020-10-13 14:00:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:12,418 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 2205 transitions. [2020-10-13 14:00:12,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:00:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2205 transitions. [2020-10-13 14:00:12,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 14:00:12,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:12,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:12,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:00:12,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:12,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:12,434 INFO L82 PathProgramCache]: Analyzing trace with hash 968549192, now seen corresponding path program 1 times [2020-10-13 14:00:12,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:12,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883113724] [2020-10-13 14:00:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:12,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:13,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:17,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:17,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 14:00:17,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:00:17,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:00:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:00:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:00:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 14:00:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:00:18,248 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:00:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:18,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:18,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:18,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:18,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 14:00:18,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:00:18,523 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 14:00:18,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883113724] [2020-10-13 14:00:18,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:18,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:00:18,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516189109] [2020-10-13 14:00:18,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:00:18,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:18,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:00:18,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:18,529 INFO L87 Difference]: Start difference. First operand 1431 states and 2205 transitions. Second operand 5 states. [2020-10-13 14:00:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:26,704 INFO L93 Difference]: Finished difference Result 4217 states and 6496 transitions. [2020-10-13 14:00:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:26,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-13 14:00:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:26,720 INFO L225 Difference]: With dead ends: 4217 [2020-10-13 14:00:26,721 INFO L226 Difference]: Without dead ends: 2802 [2020-10-13 14:00:26,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:00:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2020-10-13 14:00:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2800. [2020-10-13 14:00:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2800 states. [2020-10-13 14:00:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 4286 transitions. [2020-10-13 14:00:26,861 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 4286 transitions. Word has length 316 [2020-10-13 14:00:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:26,862 INFO L479 AbstractCegarLoop]: Abstraction has 2800 states and 4286 transitions. [2020-10-13 14:00:26,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:00:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 4286 transitions. [2020-10-13 14:00:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 14:00:26,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:26,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:26,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:00:26,872 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:26,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1234315653, now seen corresponding path program 1 times [2020-10-13 14:00:26,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:26,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86591349] [2020-10-13 14:00:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:27,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:28,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:29,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:29,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:31,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:31,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 14:00:31,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:00:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:00:31,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:00:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 14:00:31,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:00:32,566 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:00:32,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:32,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:32,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:32,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:00:32,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:32,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:32,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:32,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:32,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:32,737 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 14:00:32,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86591349] [2020-10-13 14:00:32,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:32,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:32,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81014651] [2020-10-13 14:00:32,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:32,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:32,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:32,742 INFO L87 Difference]: Start difference. First operand 2800 states and 4286 transitions. Second operand 4 states. [2020-10-13 14:00:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:38,911 INFO L93 Difference]: Finished difference Result 8335 states and 12757 transitions. [2020-10-13 14:00:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:00:38,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-10-13 14:00:38,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:38,942 INFO L225 Difference]: With dead ends: 8335 [2020-10-13 14:00:38,943 INFO L226 Difference]: Without dead ends: 5568 [2020-10-13 14:00:38,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2020-10-13 14:00:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 2814. [2020-10-13 14:00:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2814 states. [2020-10-13 14:00:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4303 transitions. [2020-10-13 14:00:39,123 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4303 transitions. Word has length 318 [2020-10-13 14:00:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:39,124 INFO L479 AbstractCegarLoop]: Abstraction has 2814 states and 4303 transitions. [2020-10-13 14:00:39,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:00:39,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4303 transitions. [2020-10-13 14:00:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 14:00:39,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:39,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:39,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:00:39,142 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:39,143 INFO L82 PathProgramCache]: Analyzing trace with hash 139182138, now seen corresponding path program 1 times [2020-10-13 14:00:39,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:39,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38381904] [2020-10-13 14:00:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:39,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:44,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:44,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 14:00:44,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:00:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:00:44,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:00:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:00:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:00:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:44,955 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:00:44,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:44,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:44,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:44,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:00:44,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:45,103 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 14:00:45,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38381904] [2020-10-13 14:00:45,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:45,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:00:45,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352398604] [2020-10-13 14:00:45,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:00:45,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:45,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:00:45,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:45,106 INFO L87 Difference]: Start difference. First operand 2814 states and 4303 transitions. Second operand 5 states. [2020-10-13 14:00:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:52,845 INFO L93 Difference]: Finished difference Result 8078 states and 12289 transitions. [2020-10-13 14:00:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:52,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-13 14:00:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:52,870 INFO L225 Difference]: With dead ends: 8078 [2020-10-13 14:00:52,870 INFO L226 Difference]: Without dead ends: 5560 [2020-10-13 14:00:52,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:00:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2020-10-13 14:00:53,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 3078. [2020-10-13 14:00:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3078 states. [2020-10-13 14:00:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 4763 transitions. [2020-10-13 14:00:53,054 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 4763 transitions. Word has length 320 [2020-10-13 14:00:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:53,055 INFO L479 AbstractCegarLoop]: Abstraction has 3078 states and 4763 transitions. [2020-10-13 14:00:53,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:00:53,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 4763 transitions. [2020-10-13 14:00:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 14:00:53,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:53,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:53,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:00:53,068 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1651140595, now seen corresponding path program 1 times [2020-10-13 14:00:53,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:53,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141501152] [2020-10-13 14:00:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:53,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:55,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:58,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:58,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 14:00:58,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:00:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 14:00:58,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:00:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:00:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 14:00:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:58,806 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:00:58,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:58,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:58,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:58,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:00:58,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:58,964 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 14:00:58,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141501152] [2020-10-13 14:00:58,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:58,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:00:58,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194059727] [2020-10-13 14:00:58,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:00:58,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:58,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:00:58,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:58,966 INFO L87 Difference]: Start difference. First operand 3078 states and 4763 transitions. Second operand 5 states. [2020-10-13 14:01:06,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:06,661 INFO L93 Difference]: Finished difference Result 8861 states and 13664 transitions. [2020-10-13 14:01:06,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:01:06,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-13 14:01:06,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:06,686 INFO L225 Difference]: With dead ends: 8861 [2020-10-13 14:01:06,687 INFO L226 Difference]: Without dead ends: 5971 [2020-10-13 14:01:06,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:01:06,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2020-10-13 14:01:07,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5969. [2020-10-13 14:01:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5969 states. [2020-10-13 14:01:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 9162 transitions. [2020-10-13 14:01:07,105 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 9162 transitions. Word has length 320 [2020-10-13 14:01:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:07,106 INFO L479 AbstractCegarLoop]: Abstraction has 5969 states and 9162 transitions. [2020-10-13 14:01:07,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:01:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 9162 transitions. [2020-10-13 14:01:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 14:01:07,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:07,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:07,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:01:07,123 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:07,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:07,123 INFO L82 PathProgramCache]: Analyzing trace with hash 544093254, now seen corresponding path program 1 times [2020-10-13 14:01:07,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:07,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396137243] [2020-10-13 14:01:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:08,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:08,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:09,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 14:01:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:01:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 14:01:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:01:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 14:01:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:01:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:12,851 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:01:12,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:12,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:12,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:12,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:12,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:01:12,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:12,941 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 14:01:12,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396137243] [2020-10-13 14:01:12,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:12,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:01:12,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786588631] [2020-10-13 14:01:12,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:01:12,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:12,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:01:12,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:12,943 INFO L87 Difference]: Start difference. First operand 5969 states and 9162 transitions. Second operand 5 states. [2020-10-13 14:01:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:19,230 INFO L93 Difference]: Finished difference Result 16235 states and 24714 transitions. [2020-10-13 14:01:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:01:19,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-13 14:01:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:19,266 INFO L225 Difference]: With dead ends: 16235 [2020-10-13 14:01:19,266 INFO L226 Difference]: Without dead ends: 11204 [2020-10-13 14:01:19,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:01:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2020-10-13 14:01:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 6930. [2020-10-13 14:01:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6930 states. [2020-10-13 14:01:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6930 states to 6930 states and 10803 transitions. [2020-10-13 14:01:19,850 INFO L78 Accepts]: Start accepts. Automaton has 6930 states and 10803 transitions. Word has length 322 [2020-10-13 14:01:19,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:19,850 INFO L479 AbstractCegarLoop]: Abstraction has 6930 states and 10803 transitions. [2020-10-13 14:01:19,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:01:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 6930 states and 10803 transitions. [2020-10-13 14:01:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 14:01:19,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:19,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:19,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:01:19,868 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:19,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:19,868 INFO L82 PathProgramCache]: Analyzing trace with hash -907968422, now seen corresponding path program 1 times [2020-10-13 14:01:19,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:19,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31595499] [2020-10-13 14:01:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:24,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:24,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 14:01:24,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:01:24,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 14:01:24,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:01:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 14:01:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:01:24,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:01:25,482 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:01:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:01:25,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:25,554 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 14:01:25,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31595499] [2020-10-13 14:01:25,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:25,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:01:25,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420547986] [2020-10-13 14:01:25,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:01:25,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:25,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:01:25,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:01:25,557 INFO L87 Difference]: Start difference. First operand 6930 states and 10803 transitions. Second operand 4 states. [2020-10-13 14:01:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:30,196 INFO L93 Difference]: Finished difference Result 17008 states and 25815 transitions. [2020-10-13 14:01:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:01:30,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-10-13 14:01:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:30,222 INFO L225 Difference]: With dead ends: 17008 [2020-10-13 14:01:30,222 INFO L226 Difference]: Without dead ends: 12005 [2020-10-13 14:01:30,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:01:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12005 states. [2020-10-13 14:01:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12005 to 7133. [2020-10-13 14:01:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2020-10-13 14:01:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 11062 transitions. [2020-10-13 14:01:30,749 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 11062 transitions. Word has length 324 [2020-10-13 14:01:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:30,749 INFO L479 AbstractCegarLoop]: Abstraction has 7133 states and 11062 transitions. [2020-10-13 14:01:30,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:01:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 11062 transitions. [2020-10-13 14:01:30,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 14:01:30,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:30,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:30,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:01:30,763 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash -400047211, now seen corresponding path program 1 times [2020-10-13 14:01:30,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:30,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786520263] [2020-10-13 14:01:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:34,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 14:01:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:01:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:01:35,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:01:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:01:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:01:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:36,516 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:01:36,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:36,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:36,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:36,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:01:36,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:36,603 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 14:01:36,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786520263] [2020-10-13 14:01:36,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:36,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:01:36,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400639056] [2020-10-13 14:01:36,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:01:36,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:36,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:01:36,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:36,605 INFO L87 Difference]: Start difference. First operand 7133 states and 11062 transitions. Second operand 5 states. [2020-10-13 14:01:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:43,751 INFO L93 Difference]: Finished difference Result 18294 states and 28069 transitions. [2020-10-13 14:01:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:01:43,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-13 14:01:43,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:43,778 INFO L225 Difference]: With dead ends: 18294 [2020-10-13 14:01:43,778 INFO L226 Difference]: Without dead ends: 13175 [2020-10-13 14:01:43,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:01:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13175 states. [2020-10-13 14:01:44,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13175 to 8881. [2020-10-13 14:01:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8881 states. [2020-10-13 14:01:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8881 states to 8881 states and 14014 transitions. [2020-10-13 14:01:44,332 INFO L78 Accepts]: Start accepts. Automaton has 8881 states and 14014 transitions. Word has length 324 [2020-10-13 14:01:44,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:44,332 INFO L479 AbstractCegarLoop]: Abstraction has 8881 states and 14014 transitions. [2020-10-13 14:01:44,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:01:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8881 states and 14014 transitions. [2020-10-13 14:01:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 14:01:44,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:44,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:44,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:01:44,346 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash 421636470, now seen corresponding path program 1 times [2020-10-13 14:01:44,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:44,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478515935] [2020-10-13 14:01:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:46,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:49,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:49,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 14:01:49,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:01:49,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:01:49,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:49,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:01:49,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:01:49,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:01:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:50,007 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:01:50,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:50,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:50,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:50,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:01:50,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:50,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:50,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478515935] [2020-10-13 14:01:50,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:50,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:01:50,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421454447] [2020-10-13 14:01:50,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:01:50,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:50,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:01:50,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:50,101 INFO L87 Difference]: Start difference. First operand 8881 states and 14014 transitions. Second operand 5 states. [2020-10-13 14:01:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:54,820 INFO L93 Difference]: Finished difference Result 13155 states and 20362 transitions. [2020-10-13 14:01:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:01:54,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 14:01:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:54,837 INFO L225 Difference]: With dead ends: 13155 [2020-10-13 14:01:54,837 INFO L226 Difference]: Without dead ends: 7777 [2020-10-13 14:01:54,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:01:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2020-10-13 14:01:55,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 7729. [2020-10-13 14:01:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2020-10-13 14:01:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12174 transitions. [2020-10-13 14:01:55,596 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12174 transitions. Word has length 326 [2020-10-13 14:01:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:55,597 INFO L479 AbstractCegarLoop]: Abstraction has 7729 states and 12174 transitions. [2020-10-13 14:01:55,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:01:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12174 transitions. [2020-10-13 14:01:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-13 14:01:55,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:55,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:55,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:01:55,610 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash -225924714, now seen corresponding path program 1 times [2020-10-13 14:01:55,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:55,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007494417] [2020-10-13 14:01:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:55,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:00,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:00,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-13 14:02:00,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:02:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 14:02:00,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:02:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:02:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 14:02:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:01,210 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:01,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:01,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:01,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:01,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:02:01,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:01,317 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 14:02:01,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007494417] [2020-10-13 14:02:01,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:01,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:02:01,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713135682] [2020-10-13 14:02:01,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:02:01,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:01,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:02:01,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:01,320 INFO L87 Difference]: Start difference. First operand 7729 states and 12174 transitions. Second operand 4 states. [2020-10-13 14:02:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:09,559 INFO L93 Difference]: Finished difference Result 18566 states and 28626 transitions. [2020-10-13 14:02:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:02:09,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-10-13 14:02:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:09,582 INFO L225 Difference]: With dead ends: 18566 [2020-10-13 14:02:09,582 INFO L226 Difference]: Without dead ends: 13718 [2020-10-13 14:02:09,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13718 states. [2020-10-13 14:02:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13718 to 13434. [2020-10-13 14:02:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13434 states. [2020-10-13 14:02:10,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13434 states to 13434 states and 20840 transitions. [2020-10-13 14:02:10,369 INFO L78 Accepts]: Start accepts. Automaton has 13434 states and 20840 transitions. Word has length 330 [2020-10-13 14:02:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:10,370 INFO L479 AbstractCegarLoop]: Abstraction has 13434 states and 20840 transitions. [2020-10-13 14:02:10,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:02:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 13434 states and 20840 transitions. [2020-10-13 14:02:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 14:02:10,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:10,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:10,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:02:10,386 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:10,386 INFO L82 PathProgramCache]: Analyzing trace with hash 252035934, now seen corresponding path program 1 times [2020-10-13 14:02:10,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:10,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451977572] [2020-10-13 14:02:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:10,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:10,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:10,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:10,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:11,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:15,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:15,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 14:02:15,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:02:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 14:02:15,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:02:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 14:02:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 14:02:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:15,972 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:15,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:15,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:15,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:15,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:02:15,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:16,053 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 14:02:16,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451977572] [2020-10-13 14:02:16,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:16,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:02:16,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281840496] [2020-10-13 14:02:16,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:02:16,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:16,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:02:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:16,056 INFO L87 Difference]: Start difference. First operand 13434 states and 20840 transitions. Second operand 4 states. [2020-10-13 14:02:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:21,617 INFO L93 Difference]: Finished difference Result 26519 states and 40324 transitions. [2020-10-13 14:02:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:02:21,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-10-13 14:02:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:21,643 INFO L225 Difference]: With dead ends: 26519 [2020-10-13 14:02:21,644 INFO L226 Difference]: Without dead ends: 20308 [2020-10-13 14:02:21,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20308 states. [2020-10-13 14:02:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20308 to 20306. [2020-10-13 14:02:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20306 states. [2020-10-13 14:02:22,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20306 states to 20306 states and 30940 transitions. [2020-10-13 14:02:22,862 INFO L78 Accepts]: Start accepts. Automaton has 20306 states and 30940 transitions. Word has length 331 [2020-10-13 14:02:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:22,863 INFO L479 AbstractCegarLoop]: Abstraction has 20306 states and 30940 transitions. [2020-10-13 14:02:22,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:02:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 20306 states and 30940 transitions. [2020-10-13 14:02:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 14:02:22,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:22,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:22,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:02:22,884 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2053604312, now seen corresponding path program 1 times [2020-10-13 14:02:22,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:22,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037726185] [2020-10-13 14:02:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:22,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:27,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:27,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 14:02:27,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:02:27,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:02:27,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:27,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:02:27,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:02:27,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 14:02:27,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:28,434 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:28,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:28,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:28,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:28,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:02:28,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:28,542 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 14:02:28,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037726185] [2020-10-13 14:02:28,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:28,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:02:28,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575970195] [2020-10-13 14:02:28,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:02:28,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:28,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:02:28,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:28,544 INFO L87 Difference]: Start difference. First operand 20306 states and 30940 transitions. Second operand 4 states. [2020-10-13 14:02:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:38,127 INFO L93 Difference]: Finished difference Result 51925 states and 78281 transitions. [2020-10-13 14:02:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:02:38,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-10-13 14:02:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:38,160 INFO L225 Difference]: With dead ends: 51925 [2020-10-13 14:02:38,161 INFO L226 Difference]: Without dead ends: 35451 [2020-10-13 14:02:38,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35451 states. [2020-10-13 14:02:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35451 to 34875. [2020-10-13 14:02:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34875 states. [2020-10-13 14:02:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34875 states to 34875 states and 52625 transitions. [2020-10-13 14:02:41,409 INFO L78 Accepts]: Start accepts. Automaton has 34875 states and 52625 transitions. Word has length 331 [2020-10-13 14:02:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:41,409 INFO L479 AbstractCegarLoop]: Abstraction has 34875 states and 52625 transitions. [2020-10-13 14:02:41,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:02:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 34875 states and 52625 transitions. [2020-10-13 14:02:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 14:02:41,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:41,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:41,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:02:41,437 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1295159438, now seen corresponding path program 1 times [2020-10-13 14:02:41,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:41,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232080557] [2020-10-13 14:02:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:42,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:42,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:46,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 14:02:46,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:02:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 14:02:46,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:46,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:02:46,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 14:02:46,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 14:02:46,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:47,068 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:47,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:47,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:47,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:02:47,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:47,150 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 14:02:47,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232080557] [2020-10-13 14:02:47,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:47,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:02:47,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937360659] [2020-10-13 14:02:47,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:02:47,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:47,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:02:47,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:47,152 INFO L87 Difference]: Start difference. First operand 34875 states and 52625 transitions. Second operand 4 states. [2020-10-13 14:02:47,626 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-13 14:02:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:55,190 INFO L93 Difference]: Finished difference Result 61436 states and 92466 transitions. [2020-10-13 14:02:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:55,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-10-13 14:02:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:55,226 INFO L225 Difference]: With dead ends: 61436 [2020-10-13 14:02:55,226 INFO L226 Difference]: Without dead ends: 41347 [2020-10-13 14:02:55,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41347 states. [2020-10-13 14:02:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41347 to 41345. [2020-10-13 14:02:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41345 states. [2020-10-13 14:02:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41345 states to 41345 states and 62517 transitions. [2020-10-13 14:02:57,564 INFO L78 Accepts]: Start accepts. Automaton has 41345 states and 62517 transitions. Word has length 332 [2020-10-13 14:02:57,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:57,564 INFO L479 AbstractCegarLoop]: Abstraction has 41345 states and 62517 transitions. [2020-10-13 14:02:57,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:02:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand 41345 states and 62517 transitions. [2020-10-13 14:02:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 14:02:57,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:57,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:57,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:02:57,607 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash 304868988, now seen corresponding path program 1 times [2020-10-13 14:02:57,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:57,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260446180] [2020-10-13 14:02:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:02,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:02,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 14:03:02,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:03:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:03:02,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:03:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 14:03:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:03,294 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:03,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:03,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:03:03,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:03,430 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 14:03:03,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260446180] [2020-10-13 14:03:03,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:03,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:03,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054236497] [2020-10-13 14:03:03,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:03,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:03,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:03,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:03,432 INFO L87 Difference]: Start difference. First operand 41345 states and 62517 transitions. Second operand 5 states. [2020-10-13 14:03:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:16,896 INFO L93 Difference]: Finished difference Result 120004 states and 180727 transitions. [2020-10-13 14:03:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:16,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-13 14:03:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:16,974 INFO L225 Difference]: With dead ends: 120004 [2020-10-13 14:03:16,974 INFO L226 Difference]: Without dead ends: 80331 [2020-10-13 14:03:17,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80331 states. [2020-10-13 14:03:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80331 to 80329. [2020-10-13 14:03:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80329 states. [2020-10-13 14:03:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80329 states to 80329 states and 120349 transitions. [2020-10-13 14:03:24,538 INFO L78 Accepts]: Start accepts. Automaton has 80329 states and 120349 transitions. Word has length 332 [2020-10-13 14:03:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:24,538 INFO L479 AbstractCegarLoop]: Abstraction has 80329 states and 120349 transitions. [2020-10-13 14:03:24,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 80329 states and 120349 transitions. [2020-10-13 14:03:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 14:03:24,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:24,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:24,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:03:24,611 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:24,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1572298386, now seen corresponding path program 1 times [2020-10-13 14:03:24,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:24,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355948506] [2020-10-13 14:03:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:29,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 14:03:29,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:03:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:03:29,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:03:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:03:29,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:30,169 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:30,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:30,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:30,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:30,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:30,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:30,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:03:30,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:30,241 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 14:03:30,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355948506] [2020-10-13 14:03:30,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:30,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:30,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215525235] [2020-10-13 14:03:30,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:30,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:30,243 INFO L87 Difference]: Start difference. First operand 80329 states and 120349 transitions. Second operand 4 states.