/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:23:28,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:23:28,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:23:28,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:23:28,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:23:28,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:23:28,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:23:28,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:23:28,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:23:28,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:23:28,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:23:28,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:23:28,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:23:28,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:23:28,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:23:28,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:23:28,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:23:28,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:23:28,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:23:28,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:23:28,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:23:28,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:23:28,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:23:28,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:23:28,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:23:28,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:23:28,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:23:28,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:23:28,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:23:28,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:23:28,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:23:28,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:23:28,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:23:28,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:23:28,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:23:28,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:23:28,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:23:28,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:23:28,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:23:28,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:23:28,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:23:28,794 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 [2020-10-14 08:23:28,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:23:28,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:23:28,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:23:28,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:23:28,841 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:23:28,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:23:28,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:23:28,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:23:28,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:23:28,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:23:28,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:23:28,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:23:28,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:23:28,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:23:28,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:23:28,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:23:28,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:23:28,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:23:28,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:23:28,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:23:28,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:23:28,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:23:28,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:23:28,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:23:28,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:23:28,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:23:28,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:23:28,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:23:28,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:23:28,848 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:23:29,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:23:29,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:23:29,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:23:29,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:23:29,175 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:23:29,176 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:23:29,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4d338cbb/32218963625f4b23a19b5923a2808fe7/FLAGe2a1bc314 [2020-10-14 08:23:29,822 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:23:29,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:23:29,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4d338cbb/32218963625f4b23a19b5923a2808fe7/FLAGe2a1bc314 [2020-10-14 08:23:30,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4d338cbb/32218963625f4b23a19b5923a2808fe7 [2020-10-14 08:23:30,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:23:30,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:23:30,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:23:30,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:23:30,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:23:30,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:30,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30, skipping insertion in model container [2020-10-14 08:23:30,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:30,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:23:30,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:23:30,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:23:30,765 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:23:30,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:23:30,937 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:23:30,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30 WrapperNode [2020-10-14 08:23:30,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:23:30,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:23:30,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:23:30,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:23:30,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:30,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:30,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:30,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:30,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:31,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:31,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (1/1) ... [2020-10-14 08:23:31,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:23:31,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:23:31,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:23:31,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:23:31,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (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 [2020-10-14 08:23:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:23:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:23:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:23:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:23:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:23:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:23:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:23:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:23:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:23:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:23:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:23:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:23:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:23:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:23:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:23:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:23:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:23:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:23:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:23:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:23:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:23:32,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:23:32,536 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:23:32,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:23:32 BoogieIcfgContainer [2020-10-14 08:23:32,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:23:32,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:23:32,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:23:32,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:23:32,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:23:30" (1/3) ... [2020-10-14 08:23:32,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e633727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:23:32, skipping insertion in model container [2020-10-14 08:23:32,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:23:30" (2/3) ... [2020-10-14 08:23:32,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e633727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:23:32, skipping insertion in model container [2020-10-14 08:23:32,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:23:32" (3/3) ... [2020-10-14 08:23:32,552 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:23:32,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:23:32,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:23:32,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:23:32,614 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:23:32,614 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:23:32,615 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:23:32,615 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:23:32,615 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:23:32,615 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:23:32,615 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:23:32,615 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:23:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-10-14 08:23:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 08:23:32,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:23:32,658 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] [2020-10-14 08:23:32,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:23:32,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:23:32,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1720759153, now seen corresponding path program 1 times [2020-10-14 08:23:32,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:23:32,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728018677] [2020-10-14 08:23:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:23:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:34,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:34,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:37,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:38,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:38,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 08:23:38,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:23:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 08:23:38,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:38,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:23:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 08:23:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 08:23:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:23:38,592 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:23:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:23:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:38,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:38,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:23:38,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:23:38,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:23:38,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:38,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:23:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:23:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:23:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:23:38,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728018677] [2020-10-14 08:23:38,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:23:38,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:23:38,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084772548] [2020-10-14 08:23:38,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:23:38,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:23:38,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:23:38,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:23:38,716 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 4 states. [2020-10-14 08:23:39,013 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-14 08:23:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:23:40,538 INFO L93 Difference]: Finished difference Result 619 states and 1086 transitions. [2020-10-14 08:23:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:23:40,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-14 08:23:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:23:40,576 INFO L225 Difference]: With dead ends: 619 [2020-10-14 08:23:40,577 INFO L226 Difference]: Without dead ends: 492 [2020-10-14 08:23:40,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:23:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-14 08:23:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2020-10-14 08:23:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-14 08:23:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 727 transitions. [2020-10-14 08:23:40,743 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 727 transitions. Word has length 147 [2020-10-14 08:23:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:23:40,748 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 727 transitions. [2020-10-14 08:23:40,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:23:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 727 transitions. [2020-10-14 08:23:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 08:23:40,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:23:40,758 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] [2020-10-14 08:23:40,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:23:40,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:23:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:23:40,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1668774051, now seen corresponding path program 1 times [2020-10-14 08:23:40,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:23:40,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599665386] [2020-10-14 08:23:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:23:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:41,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:45,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:45,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 08:23:45,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:23:45,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 08:23:45,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:45,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:45,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:23:45,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:23:45,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:23:45,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:46,303 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:23:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:23:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:46,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:46,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:46,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:23:46,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:23:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:23:46,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:46,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:23:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:23:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:23:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:23:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:23:46,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599665386] [2020-10-14 08:23:46,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:23:46,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:23:46,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732061934] [2020-10-14 08:23:46,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:23:46,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:23:46,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:23:46,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:23:46,461 INFO L87 Difference]: Start difference. First operand 490 states and 727 transitions. Second operand 5 states. [2020-10-14 08:23:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:23:48,913 INFO L93 Difference]: Finished difference Result 1347 states and 2005 transitions. [2020-10-14 08:23:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:23:48,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-14 08:23:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:23:48,920 INFO L225 Difference]: With dead ends: 1347 [2020-10-14 08:23:48,920 INFO L226 Difference]: Without dead ends: 940 [2020-10-14 08:23:48,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:23:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-10-14 08:23:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 938. [2020-10-14 08:23:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2020-10-14 08:23:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1379 transitions. [2020-10-14 08:23:48,994 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1379 transitions. Word has length 147 [2020-10-14 08:23:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:23:48,994 INFO L479 AbstractCegarLoop]: Abstraction has 938 states and 1379 transitions. [2020-10-14 08:23:48,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:23:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1379 transitions. [2020-10-14 08:23:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 08:23:48,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:23:48,998 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] [2020-10-14 08:23:48,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:23:48,999 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:23:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:23:48,999 INFO L82 PathProgramCache]: Analyzing trace with hash 579988102, now seen corresponding path program 1 times [2020-10-14 08:23:48,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:23:49,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157504005] [2020-10-14 08:23:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:23:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:49,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:49,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:49,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:50,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:54,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:54,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 08:23:54,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:23:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:23:54,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:54,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:23:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:23:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:23:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:23:54,300 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:23:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:23:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:54,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:23:54,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:23:54,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:23:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:23:54,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:23:54,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:23:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:23:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:23:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:23:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:23:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:23:54,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157504005] [2020-10-14 08:23:54,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:23:54,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:23:54,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815133215] [2020-10-14 08:23:54,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:23:54,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:23:54,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:23:54,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:23:54,361 INFO L87 Difference]: Start difference. First operand 938 states and 1379 transitions. Second operand 4 states. [2020-10-14 08:23:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:23:55,944 INFO L93 Difference]: Finished difference Result 2764 states and 4057 transitions. [2020-10-14 08:23:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:23:55,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-14 08:23:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:23:55,955 INFO L225 Difference]: With dead ends: 2764 [2020-10-14 08:23:55,955 INFO L226 Difference]: Without dead ends: 1854 [2020-10-14 08:23:55,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:23:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-10-14 08:23:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 944. [2020-10-14 08:23:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-10-14 08:23:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1387 transitions. [2020-10-14 08:23:56,037 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1387 transitions. Word has length 148 [2020-10-14 08:23:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:23:56,038 INFO L479 AbstractCegarLoop]: Abstraction has 944 states and 1387 transitions. [2020-10-14 08:23:56,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:23:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1387 transitions. [2020-10-14 08:23:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 08:23:56,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:23:56,041 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] [2020-10-14 08:23:56,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:23:56,041 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:23:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:23:56,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1067959210, now seen corresponding path program 1 times [2020-10-14 08:23:56,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:23:56,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404768853] [2020-10-14 08:23:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:23:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:23:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:23:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:00,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:01,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:01,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 08:24:01,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:24:01,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:24:01,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:01,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:24:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:24:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 08:24:01,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:24:01,392 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:24:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:01,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:01,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:01,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:01,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:24:01,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:01,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:24:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:01,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404768853] [2020-10-14 08:24:01,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:01,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:24:01,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106365872] [2020-10-14 08:24:01,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:24:01,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:01,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:24:01,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:01,519 INFO L87 Difference]: Start difference. First operand 944 states and 1387 transitions. Second operand 4 states. [2020-10-14 08:24:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:04,427 INFO L93 Difference]: Finished difference Result 2630 states and 3873 transitions. [2020-10-14 08:24:04,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:24:04,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-14 08:24:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:04,440 INFO L225 Difference]: With dead ends: 2630 [2020-10-14 08:24:04,440 INFO L226 Difference]: Without dead ends: 1818 [2020-10-14 08:24:04,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2020-10-14 08:24:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1816. [2020-10-14 08:24:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-10-14 08:24:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2642 transitions. [2020-10-14 08:24:04,599 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2642 transitions. Word has length 149 [2020-10-14 08:24:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:04,600 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2642 transitions. [2020-10-14 08:24:04,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:24:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2642 transitions. [2020-10-14 08:24:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 08:24:04,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:04,605 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] [2020-10-14 08:24:04,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:24:04,606 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1117012455, now seen corresponding path program 1 times [2020-10-14 08:24:04,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:04,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802108148] [2020-10-14 08:24:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:04,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:05,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:09,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:09,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 08:24:09,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:24:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:24:09,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:09,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:24:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 08:24:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 08:24:09,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:24:09,955 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:24:09,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:09,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:09,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:24:09,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:09,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:24:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:10,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802108148] [2020-10-14 08:24:10,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:10,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:24:10,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043934584] [2020-10-14 08:24:10,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:24:10,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:10,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:24:10,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:10,030 INFO L87 Difference]: Start difference. First operand 1816 states and 2642 transitions. Second operand 4 states. [2020-10-14 08:24:10,228 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-14 08:24:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:11,731 INFO L93 Difference]: Finished difference Result 3546 states and 5334 transitions. [2020-10-14 08:24:11,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:24:11,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-14 08:24:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:11,753 INFO L225 Difference]: With dead ends: 3546 [2020-10-14 08:24:11,753 INFO L226 Difference]: Without dead ends: 2824 [2020-10-14 08:24:11,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:24:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2020-10-14 08:24:11,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2822. [2020-10-14 08:24:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-10-14 08:24:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 4128 transitions. [2020-10-14 08:24:12,015 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 4128 transitions. Word has length 149 [2020-10-14 08:24:12,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:12,017 INFO L479 AbstractCegarLoop]: Abstraction has 2822 states and 4128 transitions. [2020-10-14 08:24:12,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:24:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 4128 transitions. [2020-10-14 08:24:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 08:24:12,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:12,025 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] [2020-10-14 08:24:12,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:24:12,026 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash 78698495, now seen corresponding path program 1 times [2020-10-14 08:24:12,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:12,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316441144] [2020-10-14 08:24:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:13,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:14,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:14,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:17,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 08:24:17,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:24:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:24:17,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:17,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:24:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:24:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 08:24:17,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:24:17,408 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:24:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:17,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:17,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:17,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:17,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:24:17,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:17,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:17,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:17,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:17,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:17,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:17,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316441144] [2020-10-14 08:24:17,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:17,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:24:17,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733250090] [2020-10-14 08:24:17,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:24:17,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:17,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:24:17,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:24:17,490 INFO L87 Difference]: Start difference. First operand 2822 states and 4128 transitions. Second operand 5 states. [2020-10-14 08:24:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:20,454 INFO L93 Difference]: Finished difference Result 8124 states and 11870 transitions. [2020-10-14 08:24:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:24:20,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-14 08:24:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:20,481 INFO L225 Difference]: With dead ends: 8124 [2020-10-14 08:24:20,481 INFO L226 Difference]: Without dead ends: 5352 [2020-10-14 08:24:20,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:24:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2020-10-14 08:24:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5350. [2020-10-14 08:24:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5350 states. [2020-10-14 08:24:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 7754 transitions. [2020-10-14 08:24:20,928 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 7754 transitions. Word has length 149 [2020-10-14 08:24:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:20,929 INFO L479 AbstractCegarLoop]: Abstraction has 5350 states and 7754 transitions. [2020-10-14 08:24:20,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:24:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 7754 transitions. [2020-10-14 08:24:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 08:24:20,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:20,938 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] [2020-10-14 08:24:20,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:24:20,939 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:20,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1208114136, now seen corresponding path program 1 times [2020-10-14 08:24:20,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:20,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416473532] [2020-10-14 08:24:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:21,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:21,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:26,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:26,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 08:24:26,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:24:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:24:26,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:26,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:24:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:24:26,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 08:24:26,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:26,280 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:24:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:26,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:26,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:26,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:24:26,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:26,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:26,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416473532] [2020-10-14 08:24:26,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:26,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:24:26,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37554604] [2020-10-14 08:24:26,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:24:26,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:26,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:24:26,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:24:26,370 INFO L87 Difference]: Start difference. First operand 5350 states and 7754 transitions. Second operand 5 states. [2020-10-14 08:24:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:29,369 INFO L93 Difference]: Finished difference Result 15211 states and 22065 transitions. [2020-10-14 08:24:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:24:29,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-14 08:24:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:29,417 INFO L225 Difference]: With dead ends: 15211 [2020-10-14 08:24:29,418 INFO L226 Difference]: Without dead ends: 10357 [2020-10-14 08:24:29,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:24:29,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10357 states. [2020-10-14 08:24:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10357 to 10355. [2020-10-14 08:24:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10355 states. [2020-10-14 08:24:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 14823 transitions. [2020-10-14 08:24:30,251 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 14823 transitions. Word has length 149 [2020-10-14 08:24:30,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:30,252 INFO L479 AbstractCegarLoop]: Abstraction has 10355 states and 14823 transitions. [2020-10-14 08:24:30,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:24:30,252 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 14823 transitions. [2020-10-14 08:24:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 08:24:30,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:30,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:24:30,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:24:30,267 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:30,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:30,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1328640981, now seen corresponding path program 1 times [2020-10-14 08:24:30,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:30,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929243663] [2020-10-14 08:24:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:30,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:35,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:35,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 08:24:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:24:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:24:35,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:35,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:24:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:24:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:24:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:35,489 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:24:35,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:35,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:35,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:35,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:35,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:35,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:24:35,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:35,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:35,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929243663] [2020-10-14 08:24:35,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:35,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:24:35,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591845170] [2020-10-14 08:24:35,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:24:35,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:35,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:24:35,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:35,532 INFO L87 Difference]: Start difference. First operand 10355 states and 14823 transitions. Second operand 4 states. [2020-10-14 08:24:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:38,956 INFO L93 Difference]: Finished difference Result 30803 states and 44037 transitions. [2020-10-14 08:24:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:24:38,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 08:24:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:39,017 INFO L225 Difference]: With dead ends: 30803 [2020-10-14 08:24:39,017 INFO L226 Difference]: Without dead ends: 20597 [2020-10-14 08:24:39,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20597 states. [2020-10-14 08:24:39,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20597 to 10391. [2020-10-14 08:24:39,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10391 states. [2020-10-14 08:24:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10391 states to 10391 states and 14871 transitions. [2020-10-14 08:24:39,879 INFO L78 Accepts]: Start accepts. Automaton has 10391 states and 14871 transitions. Word has length 150 [2020-10-14 08:24:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:39,879 INFO L479 AbstractCegarLoop]: Abstraction has 10391 states and 14871 transitions. [2020-10-14 08:24:39,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:24:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 10391 states and 14871 transitions. [2020-10-14 08:24:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 08:24:39,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:39,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:24:39,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:24:39,896 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash -347287225, now seen corresponding path program 1 times [2020-10-14 08:24:39,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:39,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305129657] [2020-10-14 08:24:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:39,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:40,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:40,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:44,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:44,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 08:24:44,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:24:44,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:24:44,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:44,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:24:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:24:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 08:24:44,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:45,187 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:24:45,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:45,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:45,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:45,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:24:45,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:45,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:45,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:45,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305129657] [2020-10-14 08:24:45,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:45,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:24:45,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535569254] [2020-10-14 08:24:45,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:24:45,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:45,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:24:45,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:24:45,232 INFO L87 Difference]: Start difference. First operand 10391 states and 14871 transitions. Second operand 5 states. [2020-10-14 08:24:47,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:47,980 INFO L93 Difference]: Finished difference Result 21082 states and 30099 transitions. [2020-10-14 08:24:47,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:24:47,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 08:24:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:48,004 INFO L225 Difference]: With dead ends: 21082 [2020-10-14 08:24:48,005 INFO L226 Difference]: Without dead ends: 10704 [2020-10-14 08:24:48,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:24:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10704 states. [2020-10-14 08:24:48,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10704 to 10566. [2020-10-14 08:24:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10566 states. [2020-10-14 08:24:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10566 states to 10566 states and 15072 transitions. [2020-10-14 08:24:48,688 INFO L78 Accepts]: Start accepts. Automaton has 10566 states and 15072 transitions. Word has length 151 [2020-10-14 08:24:48,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:48,689 INFO L479 AbstractCegarLoop]: Abstraction has 10566 states and 15072 transitions. [2020-10-14 08:24:48,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:24:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 10566 states and 15072 transitions. [2020-10-14 08:24:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 08:24:48,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:48,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:24:48,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:24:48,702 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:48,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1662037460, now seen corresponding path program 1 times [2020-10-14 08:24:48,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:48,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776058055] [2020-10-14 08:24:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:48,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:53,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:53,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 08:24:53,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:24:53,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:24:53,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:53,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:24:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:24:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:24:53,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:53,939 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:24:53,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:24:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:53,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:24:53,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:24:53,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:24:53,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:24:53,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:24:53,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:24:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:24:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:24:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:24:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:24:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:24:53,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776058055] [2020-10-14 08:24:53,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:24:53,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:24:53,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514131502] [2020-10-14 08:24:53,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:24:53,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:24:53,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:24:53,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:53,983 INFO L87 Difference]: Start difference. First operand 10566 states and 15072 transitions. Second operand 4 states. [2020-10-14 08:24:57,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:24:57,469 INFO L93 Difference]: Finished difference Result 31384 states and 44806 transitions. [2020-10-14 08:24:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:24:57,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 08:24:57,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:24:57,508 INFO L225 Difference]: With dead ends: 31384 [2020-10-14 08:24:57,508 INFO L226 Difference]: Without dead ends: 21073 [2020-10-14 08:24:57,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:24:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21073 states. [2020-10-14 08:24:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21073 to 10569. [2020-10-14 08:24:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-10-14 08:24:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15076 transitions. [2020-10-14 08:24:58,226 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15076 transitions. Word has length 152 [2020-10-14 08:24:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:24:58,226 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15076 transitions. [2020-10-14 08:24:58,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:24:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15076 transitions. [2020-10-14 08:24:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:24:58,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:24:58,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:24:58,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:24:58,237 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:24:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:24:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash -757779418, now seen corresponding path program 1 times [2020-10-14 08:24:58,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:24:58,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664132665] [2020-10-14 08:24:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:24:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:24:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:58,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:24:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:03,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:03,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:25:03,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:25:03,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:25:03,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:03,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 08:25:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:25:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:03,512 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:03,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:25:03,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:03,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:03,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664132665] [2020-10-14 08:25:03,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:03,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:03,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255151249] [2020-10-14 08:25:03,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:03,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:03,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:03,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:03,550 INFO L87 Difference]: Start difference. First operand 10569 states and 15076 transitions. Second operand 5 states. [2020-10-14 08:25:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:05,339 INFO L93 Difference]: Finished difference Result 21080 states and 30068 transitions. [2020-10-14 08:25:05,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:05,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 08:25:05,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:05,361 INFO L225 Difference]: With dead ends: 21080 [2020-10-14 08:25:05,361 INFO L226 Difference]: Without dead ends: 10564 [2020-10-14 08:25:05,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10564 states. [2020-10-14 08:25:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10564 to 10564. [2020-10-14 08:25:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10564 states. [2020-10-14 08:25:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10564 states to 10564 states and 15067 transitions. [2020-10-14 08:25:06,171 INFO L78 Accepts]: Start accepts. Automaton has 10564 states and 15067 transitions. Word has length 153 [2020-10-14 08:25:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:06,171 INFO L479 AbstractCegarLoop]: Abstraction has 10564 states and 15067 transitions. [2020-10-14 08:25:06,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10564 states and 15067 transitions. [2020-10-14 08:25:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:25:06,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:06,181 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] [2020-10-14 08:25:06,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:25:06,181 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1259998625, now seen corresponding path program 1 times [2020-10-14 08:25:06,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:06,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62470122] [2020-10-14 08:25:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:11,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:25:11,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:25:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:25:11,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:11,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:25:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:11,476 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:11,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:11,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:11,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:25:11,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:11,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:11,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:11,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62470122] [2020-10-14 08:25:11,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:11,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:11,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901066173] [2020-10-14 08:25:11,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:11,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:11,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:11,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:11,526 INFO L87 Difference]: Start difference. First operand 10564 states and 15067 transitions. Second operand 5 states. [2020-10-14 08:25:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:14,048 INFO L93 Difference]: Finished difference Result 23858 states and 33945 transitions. [2020-10-14 08:25:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:14,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 08:25:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:14,065 INFO L225 Difference]: With dead ends: 23858 [2020-10-14 08:25:14,066 INFO L226 Difference]: Without dead ends: 13504 [2020-10-14 08:25:14,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13504 states. [2020-10-14 08:25:14,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13504 to 13502. [2020-10-14 08:25:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13502 states. [2020-10-14 08:25:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13502 states to 13502 states and 18975 transitions. [2020-10-14 08:25:14,969 INFO L78 Accepts]: Start accepts. Automaton has 13502 states and 18975 transitions. Word has length 153 [2020-10-14 08:25:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:14,969 INFO L479 AbstractCegarLoop]: Abstraction has 13502 states and 18975 transitions. [2020-10-14 08:25:14,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 13502 states and 18975 transitions. [2020-10-14 08:25:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 08:25:14,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:14,980 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] [2020-10-14 08:25:14,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:25:14,980 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash 366364877, now seen corresponding path program 1 times [2020-10-14 08:25:14,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:14,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908078154] [2020-10-14 08:25:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 08:25:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:25:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:25:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:20,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:25:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 08:25:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:20,350 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:20,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:20,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:20,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:20,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:25:20,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:20,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:20,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:25:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:20,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908078154] [2020-10-14 08:25:20,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:20,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:20,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767151313] [2020-10-14 08:25:20,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:20,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:20,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:20,389 INFO L87 Difference]: Start difference. First operand 13502 states and 18975 transitions. Second operand 5 states. [2020-10-14 08:25:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:22,417 INFO L93 Difference]: Finished difference Result 22219 states and 31276 transitions. [2020-10-14 08:25:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:22,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 08:25:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:22,429 INFO L225 Difference]: With dead ends: 22219 [2020-10-14 08:25:22,430 INFO L226 Difference]: Without dead ends: 11908 [2020-10-14 08:25:22,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11908 states. [2020-10-14 08:25:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11908 to 11908. [2020-10-14 08:25:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11908 states. [2020-10-14 08:25:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11908 states to 11908 states and 16751 transitions. [2020-10-14 08:25:23,185 INFO L78 Accepts]: Start accepts. Automaton has 11908 states and 16751 transitions. Word has length 158 [2020-10-14 08:25:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:23,185 INFO L479 AbstractCegarLoop]: Abstraction has 11908 states and 16751 transitions. [2020-10-14 08:25:23,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 11908 states and 16751 transitions. [2020-10-14 08:25:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 08:25:23,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:23,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:25:23,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:25:23,195 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:23,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:23,196 INFO L82 PathProgramCache]: Analyzing trace with hash -622252687, now seen corresponding path program 1 times [2020-10-14 08:25:23,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:23,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468028865] [2020-10-14 08:25:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:23,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:23,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:23,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:26,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:28,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 08:25:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:25:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 08:25:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:28,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 08:25:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:25:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:28,480 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:28,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:28,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:28,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:28,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:25:28,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:28,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:28,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468028865] [2020-10-14 08:25:28,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:28,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:28,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143276157] [2020-10-14 08:25:28,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:28,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:28,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:28,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:28,520 INFO L87 Difference]: Start difference. First operand 11908 states and 16751 transitions. Second operand 5 states. [2020-10-14 08:25:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:30,489 INFO L93 Difference]: Finished difference Result 21688 states and 30479 transitions. [2020-10-14 08:25:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:30,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-14 08:25:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:30,498 INFO L225 Difference]: With dead ends: 21688 [2020-10-14 08:25:30,498 INFO L226 Difference]: Without dead ends: 9816 [2020-10-14 08:25:30,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9816 states. [2020-10-14 08:25:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9816 to 9816. [2020-10-14 08:25:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9816 states. [2020-10-14 08:25:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9816 states to 9816 states and 13772 transitions. [2020-10-14 08:25:31,134 INFO L78 Accepts]: Start accepts. Automaton has 9816 states and 13772 transitions. Word has length 161 [2020-10-14 08:25:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:31,135 INFO L479 AbstractCegarLoop]: Abstraction has 9816 states and 13772 transitions. [2020-10-14 08:25:31,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:31,135 INFO L276 IsEmpty]: Start isEmpty. Operand 9816 states and 13772 transitions. [2020-10-14 08:25:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 08:25:31,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:31,142 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] [2020-10-14 08:25:31,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:25:31,143 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:31,143 INFO L82 PathProgramCache]: Analyzing trace with hash -180603981, now seen corresponding path program 1 times [2020-10-14 08:25:31,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:31,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233793502] [2020-10-14 08:25:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:31,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:32,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:32,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:36,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:36,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 08:25:36,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:25:36,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:25:36,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:36,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:25:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:25:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 08:25:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:36,392 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:36,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:36,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:36,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:36,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:25:36,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:36,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:36,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:36,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233793502] [2020-10-14 08:25:36,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:36,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:25:36,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828907233] [2020-10-14 08:25:36,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:25:36,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:36,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:25:36,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:36,445 INFO L87 Difference]: Start difference. First operand 9816 states and 13772 transitions. Second operand 4 states. [2020-10-14 08:25:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:39,683 INFO L93 Difference]: Finished difference Result 24221 states and 34105 transitions. [2020-10-14 08:25:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:25:39,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-14 08:25:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:39,700 INFO L225 Difference]: With dead ends: 24221 [2020-10-14 08:25:39,700 INFO L226 Difference]: Without dead ends: 15380 [2020-10-14 08:25:39,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:25:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2020-10-14 08:25:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 15378. [2020-10-14 08:25:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15378 states. [2020-10-14 08:25:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15378 states to 15378 states and 21287 transitions. [2020-10-14 08:25:40,722 INFO L78 Accepts]: Start accepts. Automaton has 15378 states and 21287 transitions. Word has length 166 [2020-10-14 08:25:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:40,723 INFO L479 AbstractCegarLoop]: Abstraction has 15378 states and 21287 transitions. [2020-10-14 08:25:40,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:25:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15378 states and 21287 transitions. [2020-10-14 08:25:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 08:25:40,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:40,734 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] [2020-10-14 08:25:40,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:25:40,734 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1074295397, now seen corresponding path program 1 times [2020-10-14 08:25:40,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:40,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363777268] [2020-10-14 08:25:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:45,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:45,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 08:25:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:25:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:25:45,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:45,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 08:25:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 08:25:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:46,006 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:46,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:46,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:46,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:25:46,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:46,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:46,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:46,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363777268] [2020-10-14 08:25:46,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:46,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:46,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607180957] [2020-10-14 08:25:46,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:46,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:46,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:46,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:46,045 INFO L87 Difference]: Start difference. First operand 15378 states and 21287 transitions. Second operand 5 states. [2020-10-14 08:25:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:48,350 INFO L93 Difference]: Finished difference Result 30576 states and 42312 transitions. [2020-10-14 08:25:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:48,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-14 08:25:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:48,367 INFO L225 Difference]: With dead ends: 30576 [2020-10-14 08:25:48,367 INFO L226 Difference]: Without dead ends: 15346 [2020-10-14 08:25:48,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15346 states. [2020-10-14 08:25:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15346 to 15340. [2020-10-14 08:25:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15340 states. [2020-10-14 08:25:49,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15340 states to 15340 states and 21215 transitions. [2020-10-14 08:25:49,392 INFO L78 Accepts]: Start accepts. Automaton has 15340 states and 21215 transitions. Word has length 169 [2020-10-14 08:25:49,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:49,392 INFO L479 AbstractCegarLoop]: Abstraction has 15340 states and 21215 transitions. [2020-10-14 08:25:49,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15340 states and 21215 transitions. [2020-10-14 08:25:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 08:25:49,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:49,401 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] [2020-10-14 08:25:49,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:25:49,401 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:49,402 INFO L82 PathProgramCache]: Analyzing trace with hash -550203435, now seen corresponding path program 1 times [2020-10-14 08:25:49,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:49,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974265608] [2020-10-14 08:25:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:50,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:54,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:54,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 08:25:54,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:25:54,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:25:54,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:54,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:25:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:25:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 08:25:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:54,700 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:25:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:25:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:54,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:25:54,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:25:54,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:25:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:25:54,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:25:54,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:25:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:25:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:25:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:25:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:25:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:25:54,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974265608] [2020-10-14 08:25:54,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:25:54,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:25:54,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190152095] [2020-10-14 08:25:54,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:25:54,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:25:54,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:25:54,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:25:54,761 INFO L87 Difference]: Start difference. First operand 15340 states and 21215 transitions. Second operand 5 states. [2020-10-14 08:25:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:25:58,060 INFO L93 Difference]: Finished difference Result 24365 states and 33795 transitions. [2020-10-14 08:25:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:25:58,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-14 08:25:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:25:58,076 INFO L225 Difference]: With dead ends: 24365 [2020-10-14 08:25:58,076 INFO L226 Difference]: Without dead ends: 13715 [2020-10-14 08:25:58,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:25:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13715 states. [2020-10-14 08:25:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13715 to 13421. [2020-10-14 08:25:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13421 states. [2020-10-14 08:25:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 18503 transitions. [2020-10-14 08:25:59,075 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 18503 transitions. Word has length 169 [2020-10-14 08:25:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:25:59,075 INFO L479 AbstractCegarLoop]: Abstraction has 13421 states and 18503 transitions. [2020-10-14 08:25:59,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:25:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 18503 transitions. [2020-10-14 08:25:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 08:25:59,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:25:59,083 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] [2020-10-14 08:25:59,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:25:59,083 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:25:59,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:25:59,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1776406595, now seen corresponding path program 1 times [2020-10-14 08:25:59,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:25:59,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118651122] [2020-10-14 08:25:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:25:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:25:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:25:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:04,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 08:26:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:26:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:26:04,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:04,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 08:26:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 08:26:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:04,340 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:04,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:04,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:04,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:04,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:04,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:26:04,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:04,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:04,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:04,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118651122] [2020-10-14 08:26:04,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:04,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:04,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11416625] [2020-10-14 08:26:04,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:04,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:04,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:04,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:04,395 INFO L87 Difference]: Start difference. First operand 13421 states and 18503 transitions. Second operand 4 states. [2020-10-14 08:26:04,575 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-14 08:26:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:08,167 INFO L93 Difference]: Finished difference Result 34200 states and 48067 transitions. [2020-10-14 08:26:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:08,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-14 08:26:08,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:08,196 INFO L225 Difference]: With dead ends: 34200 [2020-10-14 08:26:08,196 INFO L226 Difference]: Without dead ends: 24385 [2020-10-14 08:26:08,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24385 states. [2020-10-14 08:26:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24385 to 24383. [2020-10-14 08:26:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24383 states. [2020-10-14 08:26:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24383 states to 24383 states and 33737 transitions. [2020-10-14 08:26:10,185 INFO L78 Accepts]: Start accepts. Automaton has 24383 states and 33737 transitions. Word has length 174 [2020-10-14 08:26:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:10,185 INFO L479 AbstractCegarLoop]: Abstraction has 24383 states and 33737 transitions. [2020-10-14 08:26:10,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 24383 states and 33737 transitions. [2020-10-14 08:26:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 08:26:10,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:10,197 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] [2020-10-14 08:26:10,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:26:10,197 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:10,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:10,198 INFO L82 PathProgramCache]: Analyzing trace with hash 393519170, now seen corresponding path program 1 times [2020-10-14 08:26:10,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:10,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430115190] [2020-10-14 08:26:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:10,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 08:26:15,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:26:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:26:15,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:15,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 08:26:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 08:26:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:15,463 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:15,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:15,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:15,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:26:15,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:15,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:15,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430115190] [2020-10-14 08:26:15,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:15,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:26:15,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737162424] [2020-10-14 08:26:15,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:26:15,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:15,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:26:15,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:26:15,520 INFO L87 Difference]: Start difference. First operand 24383 states and 33737 transitions. Second operand 4 states. [2020-10-14 08:26:15,728 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-14 08:26:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:21,012 INFO L93 Difference]: Finished difference Result 68579 states and 95520 transitions. [2020-10-14 08:26:21,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:26:21,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-14 08:26:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:21,058 INFO L225 Difference]: With dead ends: 68579 [2020-10-14 08:26:21,058 INFO L226 Difference]: Without dead ends: 47435 [2020-10-14 08:26:21,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:26:21,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47435 states. [2020-10-14 08:26:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47435 to 47433. [2020-10-14 08:26:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47433 states. [2020-10-14 08:26:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47433 states to 47433 states and 65241 transitions. [2020-10-14 08:26:25,072 INFO L78 Accepts]: Start accepts. Automaton has 47433 states and 65241 transitions. Word has length 174 [2020-10-14 08:26:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:25,072 INFO L479 AbstractCegarLoop]: Abstraction has 47433 states and 65241 transitions. [2020-10-14 08:26:25,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:26:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 47433 states and 65241 transitions. [2020-10-14 08:26:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 08:26:25,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:25,104 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] [2020-10-14 08:26:25,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:26:25,104 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:25,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1448116733, now seen corresponding path program 1 times [2020-10-14 08:26:25,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:25,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429961226] [2020-10-14 08:26:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:25,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:25,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:30,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:30,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 08:26:30,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:26:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:26:30,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:30,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:26:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 08:26:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 08:26:30,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:30,392 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:30,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:30,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:30,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:30,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:30,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:26:30,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:30,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:26:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:26:30,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:30,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429961226] [2020-10-14 08:26:30,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:30,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:26:30,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359639387] [2020-10-14 08:26:30,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:26:30,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:30,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:26:30,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:26:30,444 INFO L87 Difference]: Start difference. First operand 47433 states and 65241 transitions. Second operand 6 states. [2020-10-14 08:26:30,674 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 08:26:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:26:41,097 INFO L93 Difference]: Finished difference Result 110579 states and 161702 transitions. [2020-10-14 08:26:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:26:41,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-10-14 08:26:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:26:41,214 INFO L225 Difference]: With dead ends: 110579 [2020-10-14 08:26:41,214 INFO L226 Difference]: Without dead ends: 89705 [2020-10-14 08:26:41,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:26:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89705 states. [2020-10-14 08:26:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89705 to 70193. [2020-10-14 08:26:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70193 states. [2020-10-14 08:26:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70193 states to 70193 states and 99033 transitions. [2020-10-14 08:26:48,890 INFO L78 Accepts]: Start accepts. Automaton has 70193 states and 99033 transitions. Word has length 174 [2020-10-14 08:26:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:26:48,890 INFO L479 AbstractCegarLoop]: Abstraction has 70193 states and 99033 transitions. [2020-10-14 08:26:48,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:26:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 70193 states and 99033 transitions. [2020-10-14 08:26:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 08:26:48,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:26:48,921 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] [2020-10-14 08:26:48,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:26:48,921 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:26:48,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:26:48,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1651139613, now seen corresponding path program 1 times [2020-10-14 08:26:48,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:26:48,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747005241] [2020-10-14 08:26:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:26:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:49,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:53,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:53,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 08:26:53,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:26:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:26:53,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:53,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:26:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:26:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 08:26:53,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:54,248 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:26:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:26:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:26:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:26:54,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:26:54,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:26:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:26:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:26:54,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:26:54,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:26:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:26:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:26:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:26:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:26:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:26:54,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747005241] [2020-10-14 08:26:54,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:26:54,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:26:54,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271121922] [2020-10-14 08:26:54,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:26:54,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:26:54,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:26:54,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:26:54,334 INFO L87 Difference]: Start difference. First operand 70193 states and 99033 transitions. Second operand 9 states. [2020-10-14 08:26:54,568 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 172