/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/systemc/mem_slave_tlm.5.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:09:54,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:09:54,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:09:54,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:09:54,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:09:54,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:09:54,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:09:54,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:09:54,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:09:54,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:09:54,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:09:54,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:09:54,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:09:54,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:09:54,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:09:54,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:09:54,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:09:54,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:09:54,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:09:54,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:09:54,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:09:54,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:09:54,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:09:54,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:09:54,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:09:54,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:09:54,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:09:54,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:09:54,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:09:54,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:09:54,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:09:54,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:09:54,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:09:54,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:09:54,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:09:54,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:09:54,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:09:54,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:09:54,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:09:54,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:09:54,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:09:54,769 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 10:09:54,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:09:54,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:09:54,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:09:54,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:09:54,794 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:09:54,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:09:54,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:09:54,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:09:54,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:09:54,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:09:54,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:09:54,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:09:54,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:09:54,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:09:54,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:09:54,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:09:54,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:09:54,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:09:54,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:09:54,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:09:54,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:09:54,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:09:54,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:09:54,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:09:54,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:09:54,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:09:54,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:09:54,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:09:54,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:09:54,799 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 10:09:55,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:09:55,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:09:55,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:09:55,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:09:55,194 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:09:55,195 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c [2020-10-14 10:09:55,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cdb3ae3/1d82db5b63c048c3829a4aacdbc54501/FLAG5b4ad6086 [2020-10-14 10:09:55,828 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:09:55,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c [2020-10-14 10:09:55,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cdb3ae3/1d82db5b63c048c3829a4aacdbc54501/FLAG5b4ad6086 [2020-10-14 10:09:56,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cdb3ae3/1d82db5b63c048c3829a4aacdbc54501 [2020-10-14 10:09:56,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:09:56,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:09:56,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:09:56,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:09:56,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:09:56,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b090d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56, skipping insertion in model container [2020-10-14 10:09:56,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:09:56,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:09:56,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:09:56,459 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:09:56,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:09:56,707 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:09:56,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56 WrapperNode [2020-10-14 10:09:56,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:09:56,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:09:56,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:09:56,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:09:56,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (1/1) ... [2020-10-14 10:09:56,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:09:56,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:09:56,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:09:56,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:09:56,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (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 10:09:56,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:09:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:09:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-14 10:09:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-14 10:09:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-14 10:09:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-14 10:09:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-14 10:09:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-14 10:09:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-14 10:09:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:09:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:09:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:09:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-14 10:09:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-14 10:09:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-14 10:09:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-14 10:09:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-14 10:09:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-14 10:09:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-14 10:09:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:09:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:09:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:09:58,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:09:58,015 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-14 10:09:58,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:09:58 BoogieIcfgContainer [2020-10-14 10:09:58,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:09:58,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:09:58,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:09:58,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:09:58,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:09:56" (1/3) ... [2020-10-14 10:09:58,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a16cd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:09:58, skipping insertion in model container [2020-10-14 10:09:58,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:09:56" (2/3) ... [2020-10-14 10:09:58,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a16cd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:09:58, skipping insertion in model container [2020-10-14 10:09:58,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:09:58" (3/3) ... [2020-10-14 10:09:58,031 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2020-10-14 10:09:58,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:09:58,050 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:09:58,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:09:58,094 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:09:58,094 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:09:58,094 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:09:58,094 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:09:58,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:09:58,095 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:09:58,095 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:09:58,095 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:09:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-10-14 10:09:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 10:09:58,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:58,134 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] [2020-10-14 10:09:58,135 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:58,141 INFO L82 PathProgramCache]: Analyzing trace with hash 990200895, now seen corresponding path program 1 times [2020-10-14 10:09:58,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:58,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101155287] [2020-10-14 10:09:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:59,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:03,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 10:10:03,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 10:10:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:10:03,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:03,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 10:10:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:10:03,731 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:03,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:03,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:03,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:03,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 10:10:03,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:03,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:03,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:03,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:03,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:10:03,780 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 10:10:03,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101155287] [2020-10-14 10:10:03,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:03,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 10:10:03,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45396631] [2020-10-14 10:10:03,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 10:10:03,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:03,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 10:10:03,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:10:03,807 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-10-14 10:10:05,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:05,377 INFO L93 Difference]: Finished difference Result 635 states and 1131 transitions. [2020-10-14 10:10:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 10:10:05,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-14 10:10:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:05,396 INFO L225 Difference]: With dead ends: 635 [2020-10-14 10:10:05,397 INFO L226 Difference]: Without dead ends: 348 [2020-10-14 10:10:05,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 10:10:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-14 10:10:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 297. [2020-10-14 10:10:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-14 10:10:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 500 transitions. [2020-10-14 10:10:05,482 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 500 transitions. Word has length 39 [2020-10-14 10:10:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:05,482 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 500 transitions. [2020-10-14 10:10:05,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 10:10:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 500 transitions. [2020-10-14 10:10:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 10:10:05,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:05,486 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] [2020-10-14 10:10:05,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:10:05,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:05,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:05,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1161210825, now seen corresponding path program 1 times [2020-10-14 10:10:05,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:05,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482622610] [2020-10-14 10:10:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:05,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:07,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:10,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:10,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 10:10:10,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 10:10:10,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:10:10,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:10,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:10:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 10:10:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:10:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:10:10,755 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:10,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:10,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:10,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:10,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:10:10,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:10,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:10:10,789 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 10:10:10,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482622610] [2020-10-14 10:10:10,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:10,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:10,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645697222] [2020-10-14 10:10:10,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:10,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:10,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:10,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:10,799 INFO L87 Difference]: Start difference. First operand 297 states and 500 transitions. Second operand 4 states. [2020-10-14 10:10:11,028 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:10:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:12,792 INFO L93 Difference]: Finished difference Result 860 states and 1425 transitions. [2020-10-14 10:10:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:12,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-14 10:10:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:12,798 INFO L225 Difference]: With dead ends: 860 [2020-10-14 10:10:12,798 INFO L226 Difference]: Without dead ends: 574 [2020-10-14 10:10:12,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-14 10:10:12,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 506. [2020-10-14 10:10:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-14 10:10:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 841 transitions. [2020-10-14 10:10:12,857 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 841 transitions. Word has length 40 [2020-10-14 10:10:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:12,859 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 841 transitions. [2020-10-14 10:10:12,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 841 transitions. [2020-10-14 10:10:12,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 10:10:12,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:12,866 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] [2020-10-14 10:10:12,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:10:12,867 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:12,867 INFO L82 PathProgramCache]: Analyzing trace with hash -908494351, now seen corresponding path program 1 times [2020-10-14 10:10:12,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:12,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443500485] [2020-10-14 10:10:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:12,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:13,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:13,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:14,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:14,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:17,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:17,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 10:10:17,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 10:10:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:10:17,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:17,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 10:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:10:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:10:18,066 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:18,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:18,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:18,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:10:18,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:18,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:18,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:10:18,094 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 10:10:18,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443500485] [2020-10-14 10:10:18,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:18,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:18,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284426312] [2020-10-14 10:10:18,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:18,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:18,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:18,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:18,105 INFO L87 Difference]: Start difference. First operand 506 states and 841 transitions. Second operand 4 states. [2020-10-14 10:10:18,233 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:10:20,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:20,004 INFO L93 Difference]: Finished difference Result 1277 states and 2107 transitions. [2020-10-14 10:10:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:20,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 10:10:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:20,017 INFO L225 Difference]: With dead ends: 1277 [2020-10-14 10:10:20,017 INFO L226 Difference]: Without dead ends: 783 [2020-10-14 10:10:20,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-10-14 10:10:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 707. [2020-10-14 10:10:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-10-14 10:10:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1154 transitions. [2020-10-14 10:10:20,102 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1154 transitions. Word has length 42 [2020-10-14 10:10:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:20,103 INFO L479 AbstractCegarLoop]: Abstraction has 707 states and 1154 transitions. [2020-10-14 10:10:20,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1154 transitions. [2020-10-14 10:10:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 10:10:20,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:20,109 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] [2020-10-14 10:10:20,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:10:20,109 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash -895890097, now seen corresponding path program 1 times [2020-10-14 10:10:20,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:20,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632372399] [2020-10-14 10:10:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:20,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:21,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:23,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:23,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:10:23,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:10:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3262 [2020-10-14 10:10:23,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:23,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:10:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:10:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:10:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:23,550 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:23,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:23,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:23,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:23,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:23,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:10:23,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:23,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:23,575 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 10:10:23,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632372399] [2020-10-14 10:10:23,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:23,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:23,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319602148] [2020-10-14 10:10:23,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:23,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:23,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:23,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:23,578 INFO L87 Difference]: Start difference. First operand 707 states and 1154 transitions. Second operand 4 states. [2020-10-14 10:10:23,708 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:10:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:24,993 INFO L93 Difference]: Finished difference Result 1468 states and 2378 transitions. [2020-10-14 10:10:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:24,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 10:10:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:25,007 INFO L225 Difference]: With dead ends: 1468 [2020-10-14 10:10:25,008 INFO L226 Difference]: Without dead ends: 770 [2020-10-14 10:10:25,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-10-14 10:10:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 707. [2020-10-14 10:10:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-10-14 10:10:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1153 transitions. [2020-10-14 10:10:25,085 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1153 transitions. Word has length 44 [2020-10-14 10:10:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:25,085 INFO L479 AbstractCegarLoop]: Abstraction has 707 states and 1153 transitions. [2020-10-14 10:10:25,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1153 transitions. [2020-10-14 10:10:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 10:10:25,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:25,088 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] [2020-10-14 10:10:25,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:10:25,088 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash -501523311, now seen corresponding path program 1 times [2020-10-14 10:10:25,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:25,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360219936] [2020-10-14 10:10:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:25,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:27,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:27,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:10:27,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:10:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-14 10:10:27,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:27,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:10:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 10:10:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 10:10:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:27,260 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:27,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:27,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:27,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:27,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:10:27,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:27,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:27,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:10:27,280 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 10:10:27,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360219936] [2020-10-14 10:10:27,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:27,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:27,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279726615] [2020-10-14 10:10:27,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:27,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:27,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:27,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:27,283 INFO L87 Difference]: Start difference. First operand 707 states and 1153 transitions. Second operand 4 states. [2020-10-14 10:10:27,494 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:10:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:29,185 INFO L93 Difference]: Finished difference Result 2126 states and 3500 transitions. [2020-10-14 10:10:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:29,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 10:10:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:29,206 INFO L225 Difference]: With dead ends: 2126 [2020-10-14 10:10:29,207 INFO L226 Difference]: Without dead ends: 1442 [2020-10-14 10:10:29,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2020-10-14 10:10:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1325. [2020-10-14 10:10:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-10-14 10:10:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2129 transitions. [2020-10-14 10:10:29,320 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2129 transitions. Word has length 44 [2020-10-14 10:10:29,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:29,321 INFO L479 AbstractCegarLoop]: Abstraction has 1325 states and 2129 transitions. [2020-10-14 10:10:29,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2129 transitions. [2020-10-14 10:10:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 10:10:29,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:29,323 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] [2020-10-14 10:10:29,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:10:29,324 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:29,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:29,324 INFO L82 PathProgramCache]: Analyzing trace with hash -746256376, now seen corresponding path program 1 times [2020-10-14 10:10:29,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:29,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895298631] [2020-10-14 10:10:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:29,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:31,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:31,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:10:31,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:10:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1723 [2020-10-14 10:10:31,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:31,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:10:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:10:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:10:31,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:31,222 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:31,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:31,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:31,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:31,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:10:31,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:31,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:31,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:31,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:31,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:31,246 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 10:10:31,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895298631] [2020-10-14 10:10:31,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:31,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:31,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112847737] [2020-10-14 10:10:31,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:31,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:31,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:31,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:31,249 INFO L87 Difference]: Start difference. First operand 1325 states and 2129 transitions. Second operand 4 states. [2020-10-14 10:10:31,392 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:10:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:32,829 INFO L93 Difference]: Finished difference Result 2732 states and 4428 transitions. [2020-10-14 10:10:32,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:32,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 10:10:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:32,838 INFO L225 Difference]: With dead ends: 2732 [2020-10-14 10:10:32,838 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 10:10:32,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 10:10:32,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1325. [2020-10-14 10:10:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-10-14 10:10:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2107 transitions. [2020-10-14 10:10:32,988 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2107 transitions. Word has length 44 [2020-10-14 10:10:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:32,989 INFO L479 AbstractCegarLoop]: Abstraction has 1325 states and 2107 transitions. [2020-10-14 10:10:32,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2107 transitions. [2020-10-14 10:10:32,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 10:10:32,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:32,993 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] [2020-10-14 10:10:32,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:10:32,994 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:32,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:32,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1513167334, now seen corresponding path program 1 times [2020-10-14 10:10:32,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:32,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005926008] [2020-10-14 10:10:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:33,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:34,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:34,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:10:34,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:10:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-10-14 10:10:34,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:34,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:10:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:10:34,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 10:10:34,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:34,225 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:34,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:34,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:10:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:34,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:10:34,245 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 10:10:34,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005926008] [2020-10-14 10:10:34,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:34,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:34,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847741412] [2020-10-14 10:10:34,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:34,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:34,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:34,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:34,247 INFO L87 Difference]: Start difference. First operand 1325 states and 2107 transitions. Second operand 4 states. [2020-10-14 10:10:35,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:35,690 INFO L93 Difference]: Finished difference Result 2751 states and 4423 transitions. [2020-10-14 10:10:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:35,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 10:10:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:35,700 INFO L225 Difference]: With dead ends: 2751 [2020-10-14 10:10:35,700 INFO L226 Difference]: Without dead ends: 1446 [2020-10-14 10:10:35,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2020-10-14 10:10:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1337. [2020-10-14 10:10:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-10-14 10:10:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2095 transitions. [2020-10-14 10:10:35,847 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2095 transitions. Word has length 44 [2020-10-14 10:10:35,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:35,847 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 2095 transitions. [2020-10-14 10:10:35,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2095 transitions. [2020-10-14 10:10:35,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 10:10:35,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:35,850 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] [2020-10-14 10:10:35,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:10:35,850 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:35,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1429328310, now seen corresponding path program 1 times [2020-10-14 10:10:35,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:35,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516317623] [2020-10-14 10:10:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:35,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:36,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:36,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:36,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:36,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:10:36,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:10:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-10-14 10:10:36,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:36,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:10:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 10:10:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:10:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:37,061 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:37,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:37,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:37,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:37,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:10:37,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:37,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:37,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:37,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:37,082 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 10:10:37,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516317623] [2020-10-14 10:10:37,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:37,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:37,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118876315] [2020-10-14 10:10:37,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:37,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:37,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:37,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:37,085 INFO L87 Difference]: Start difference. First operand 1337 states and 2095 transitions. Second operand 4 states. [2020-10-14 10:10:37,227 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:10:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:38,961 INFO L93 Difference]: Finished difference Result 3208 states and 5095 transitions. [2020-10-14 10:10:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:38,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 10:10:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:38,973 INFO L225 Difference]: With dead ends: 3208 [2020-10-14 10:10:38,974 INFO L226 Difference]: Without dead ends: 1886 [2020-10-14 10:10:38,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:38,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2020-10-14 10:10:39,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1728. [2020-10-14 10:10:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-10-14 10:10:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2549 transitions. [2020-10-14 10:10:39,134 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2549 transitions. Word has length 46 [2020-10-14 10:10:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:39,135 INFO L479 AbstractCegarLoop]: Abstraction has 1728 states and 2549 transitions. [2020-10-14 10:10:39,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2549 transitions. [2020-10-14 10:10:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 10:10:39,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:39,137 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] [2020-10-14 10:10:39,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:10:39,138 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1028903612, now seen corresponding path program 1 times [2020-10-14 10:10:39,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:39,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287054596] [2020-10-14 10:10:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:39,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:39,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:39,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:40,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 10:10:40,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:10:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1252 [2020-10-14 10:10:40,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:40,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:10:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 10:10:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:10:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:40,555 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:40,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:40,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:40,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:10:40,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:40,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:40,573 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 10:10:40,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287054596] [2020-10-14 10:10:40,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:40,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:40,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730573043] [2020-10-14 10:10:40,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:40,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:40,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:40,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:40,575 INFO L87 Difference]: Start difference. First operand 1728 states and 2549 transitions. Second operand 4 states. [2020-10-14 10:10:40,787 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:10:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:42,689 INFO L93 Difference]: Finished difference Result 3986 states and 6024 transitions. [2020-10-14 10:10:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:42,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-14 10:10:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:42,704 INFO L225 Difference]: With dead ends: 3986 [2020-10-14 10:10:42,705 INFO L226 Difference]: Without dead ends: 2280 [2020-10-14 10:10:42,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2020-10-14 10:10:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2120. [2020-10-14 10:10:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2120 states. [2020-10-14 10:10:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3122 transitions. [2020-10-14 10:10:42,938 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3122 transitions. Word has length 48 [2020-10-14 10:10:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:42,938 INFO L479 AbstractCegarLoop]: Abstraction has 2120 states and 3122 transitions. [2020-10-14 10:10:42,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:42,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3122 transitions. [2020-10-14 10:10:42,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 10:10:42,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:42,943 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] [2020-10-14 10:10:42,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:10:42,944 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:42,944 INFO L82 PathProgramCache]: Analyzing trace with hash 976292112, now seen corresponding path program 1 times [2020-10-14 10:10:42,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:42,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264435548] [2020-10-14 10:10:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:42,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:44,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 10:10:44,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:10:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-14 10:10:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:44,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:10:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:10:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:10:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:44,690 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:44,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:44,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:44,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:44,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:10:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:44,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:44,712 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 10:10:44,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264435548] [2020-10-14 10:10:44,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:44,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:44,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454633136] [2020-10-14 10:10:44,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:44,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:44,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:44,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:44,714 INFO L87 Difference]: Start difference. First operand 2120 states and 3122 transitions. Second operand 4 states. [2020-10-14 10:10:44,862 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:10:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:46,502 INFO L93 Difference]: Finished difference Result 4370 states and 6551 transitions. [2020-10-14 10:10:46,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:46,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-14 10:10:46,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:46,516 INFO L225 Difference]: With dead ends: 4370 [2020-10-14 10:10:46,516 INFO L226 Difference]: Without dead ends: 2271 [2020-10-14 10:10:46,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:46,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-10-14 10:10:46,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2111. [2020-10-14 10:10:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2111 states. [2020-10-14 10:10:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3017 transitions. [2020-10-14 10:10:46,779 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3017 transitions. Word has length 49 [2020-10-14 10:10:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:46,779 INFO L479 AbstractCegarLoop]: Abstraction has 2111 states and 3017 transitions. [2020-10-14 10:10:46,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3017 transitions. [2020-10-14 10:10:46,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 10:10:46,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:46,783 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] [2020-10-14 10:10:46,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:10:46,783 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:46,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1831658448, now seen corresponding path program 1 times [2020-10-14 10:10:46,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:46,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594618517] [2020-10-14 10:10:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:46,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:47,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:48,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:48,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 10:10:48,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:10:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2042 [2020-10-14 10:10:48,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:48,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:10:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:10:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 10:10:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:48,982 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:48,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:48,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:48,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:48,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:48,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:10:48,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:48,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:10:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:10:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:48,997 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 10:10:48,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594618517] [2020-10-14 10:10:48,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:48,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:10:48,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227827593] [2020-10-14 10:10:48,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:10:48,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:48,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:10:48,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:10:48,999 INFO L87 Difference]: Start difference. First operand 2111 states and 3017 transitions. Second operand 4 states. [2020-10-14 10:10:49,143 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:10:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:51,131 INFO L93 Difference]: Finished difference Result 6003 states and 8828 transitions. [2020-10-14 10:10:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:10:51,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 10:10:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:51,153 INFO L225 Difference]: With dead ends: 6003 [2020-10-14 10:10:51,153 INFO L226 Difference]: Without dead ends: 3913 [2020-10-14 10:10:51,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:10:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3913 states. [2020-10-14 10:10:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3913 to 3633. [2020-10-14 10:10:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3633 states. [2020-10-14 10:10:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5208 transitions. [2020-10-14 10:10:51,533 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5208 transitions. Word has length 53 [2020-10-14 10:10:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:51,534 INFO L479 AbstractCegarLoop]: Abstraction has 3633 states and 5208 transitions. [2020-10-14 10:10:51,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:10:51,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5208 transitions. [2020-10-14 10:10:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 10:10:51,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:51,545 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] [2020-10-14 10:10:51,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:10:51,545 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:51,546 INFO L82 PathProgramCache]: Analyzing trace with hash 282418645, now seen corresponding path program 1 times [2020-10-14 10:10:51,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:51,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402448023] [2020-10-14 10:10:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:51,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:52,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:52,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 10:10:52,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:10:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-14 10:10:52,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:52,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:10:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 10:10:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 10:10:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:52,531 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:52,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:52,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:52,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:52,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 10:10:52,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:52,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:10:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 10:10:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:52,562 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 10:10:52,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402448023] [2020-10-14 10:10:52,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:52,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:10:52,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392478276] [2020-10-14 10:10:52,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:10:52,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:52,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:10:52,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:10:52,564 INFO L87 Difference]: Start difference. First operand 3633 states and 5208 transitions. Second operand 7 states. [2020-10-14 10:10:52,718 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:10:53,371 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 10:10:53,611 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 10:10:55,466 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:10:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:10:56,319 INFO L93 Difference]: Finished difference Result 9569 states and 14168 transitions. [2020-10-14 10:10:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 10:10:56,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-14 10:10:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:10:56,365 INFO L225 Difference]: With dead ends: 9569 [2020-10-14 10:10:56,366 INFO L226 Difference]: Without dead ends: 5957 [2020-10-14 10:10:56,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:10:56,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2020-10-14 10:10:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 5419. [2020-10-14 10:10:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-10-14 10:10:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 8048 transitions. [2020-10-14 10:10:57,047 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 8048 transitions. Word has length 54 [2020-10-14 10:10:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:10:57,047 INFO L479 AbstractCegarLoop]: Abstraction has 5419 states and 8048 transitions. [2020-10-14 10:10:57,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:10:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 8048 transitions. [2020-10-14 10:10:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 10:10:57,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:10:57,052 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] [2020-10-14 10:10:57,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:10:57,052 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:10:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:10:57,052 INFO L82 PathProgramCache]: Analyzing trace with hash 712801442, now seen corresponding path program 1 times [2020-10-14 10:10:57,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:10:57,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472761574] [2020-10-14 10:10:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:10:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:59,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:59,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 10:10:59,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:10:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2380 [2020-10-14 10:10:59,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:59,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:10:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 10:10:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 10:10:59,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:59,700 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:10:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:10:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:10:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:10:59,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:10:59,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:10:59,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:10:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:10:59,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:10:59,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:10:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:10:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:10:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 10:10:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:10:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:10:59,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472761574] [2020-10-14 10:10:59,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:10:59,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:10:59,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137666254] [2020-10-14 10:10:59,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:10:59,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:10:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:10:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:10:59,739 INFO L87 Difference]: Start difference. First operand 5419 states and 8048 transitions. Second operand 7 states. [2020-10-14 10:10:59,912 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:11:00,651 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 10:11:00,867 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-14 10:11:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:11:02,830 INFO L93 Difference]: Finished difference Result 11270 states and 16971 transitions. [2020-10-14 10:11:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 10:11:02,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-14 10:11:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:11:02,904 INFO L225 Difference]: With dead ends: 11270 [2020-10-14 10:11:02,904 INFO L226 Difference]: Without dead ends: 5872 [2020-10-14 10:11:02,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:11:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2020-10-14 10:11:03,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 5355. [2020-10-14 10:11:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5355 states. [2020-10-14 10:11:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 7904 transitions. [2020-10-14 10:11:03,548 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 7904 transitions. Word has length 55 [2020-10-14 10:11:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:11:03,550 INFO L479 AbstractCegarLoop]: Abstraction has 5355 states and 7904 transitions. [2020-10-14 10:11:03,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:11:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 7904 transitions. [2020-10-14 10:11:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 10:11:03,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:11:03,558 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] [2020-10-14 10:11:03,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:11:03,559 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:11:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:11:03,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2034374652, now seen corresponding path program 1 times [2020-10-14 10:11:03,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:11:03,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231000967] [2020-10-14 10:11:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:11:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:04,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:04,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 10:11:04,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:11:04,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-14 10:11:04,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:04,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:11:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 10:11:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:11:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:04,348 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:11:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:11:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:04,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:11:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:11:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:04,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:04,372 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 10:11:04,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231000967] [2020-10-14 10:11:04,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:11:04,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:11:04,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807280140] [2020-10-14 10:11:04,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:11:04,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:11:04,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:11:04,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:11:04,375 INFO L87 Difference]: Start difference. First operand 5355 states and 7904 transitions. Second operand 4 states. [2020-10-14 10:11:04,666 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:11:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:11:06,818 INFO L93 Difference]: Finished difference Result 9041 states and 14162 transitions. [2020-10-14 10:11:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:11:06,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 10:11:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:11:06,855 INFO L225 Difference]: With dead ends: 9041 [2020-10-14 10:11:06,856 INFO L226 Difference]: Without dead ends: 9037 [2020-10-14 10:11:06,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:11:06,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9037 states. [2020-10-14 10:11:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9037 to 8263. [2020-10-14 10:11:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8263 states. [2020-10-14 10:11:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8263 states to 8263 states and 13112 transitions. [2020-10-14 10:11:07,834 INFO L78 Accepts]: Start accepts. Automaton has 8263 states and 13112 transitions. Word has length 63 [2020-10-14 10:11:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:11:07,834 INFO L479 AbstractCegarLoop]: Abstraction has 8263 states and 13112 transitions. [2020-10-14 10:11:07,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:11:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8263 states and 13112 transitions. [2020-10-14 10:11:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 10:11:07,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:11:07,858 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] [2020-10-14 10:11:07,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:11:07,858 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:11:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:11:07,858 INFO L82 PathProgramCache]: Analyzing trace with hash 132963127, now seen corresponding path program 1 times [2020-10-14 10:11:07,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:11:07,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829061180] [2020-10-14 10:11:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:11:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:07,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:08,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:08,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 10:11:08,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:11:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-14 10:11:08,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:08,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:11:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 10:11:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 10:11:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:08,580 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:11:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:11:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:08,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:08,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:11:08,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:08,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:11:08,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:08,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:08,602 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 10:11:08,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829061180] [2020-10-14 10:11:08,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:11:08,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:11:08,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645498094] [2020-10-14 10:11:08,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:11:08,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:11:08,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:11:08,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:11:08,604 INFO L87 Difference]: Start difference. First operand 8263 states and 13112 transitions. Second operand 4 states. [2020-10-14 10:11:08,820 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:11:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:11:11,146 INFO L93 Difference]: Finished difference Result 16934 states and 27751 transitions. [2020-10-14 10:11:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:11:11,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-14 10:11:11,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:11:11,183 INFO L225 Difference]: With dead ends: 16934 [2020-10-14 10:11:11,183 INFO L226 Difference]: Without dead ends: 8692 [2020-10-14 10:11:11,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:11:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2020-10-14 10:11:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7074. [2020-10-14 10:11:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7074 states. [2020-10-14 10:11:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7074 states to 7074 states and 10965 transitions. [2020-10-14 10:11:11,873 INFO L78 Accepts]: Start accepts. Automaton has 7074 states and 10965 transitions. Word has length 77 [2020-10-14 10:11:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:11:11,873 INFO L479 AbstractCegarLoop]: Abstraction has 7074 states and 10965 transitions. [2020-10-14 10:11:11,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:11:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7074 states and 10965 transitions. [2020-10-14 10:11:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 10:11:11,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:11:11,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:11:11,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:11:11,885 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:11:11,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:11:11,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1385447662, now seen corresponding path program 1 times [2020-10-14 10:11:11,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:11:11,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499439392] [2020-10-14 10:11:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:11:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:12,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 10:11:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:11:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 10:11:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:12,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:11:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 10:11:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:11:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:12,438 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:11:12,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:11:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:12,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:12,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:11:12,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:11:12,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:12,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:11:12,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 10:11:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:12,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:12,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:12,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 10:11:12,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 10:11:12,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:12,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:11:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:11:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:11:12,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499439392] [2020-10-14 10:11:12,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:11:12,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 10:11:12,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063251326] [2020-10-14 10:11:12,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:11:12,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:11:12,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:11:12,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:11:12,610 INFO L87 Difference]: Start difference. First operand 7074 states and 10965 transitions. Second operand 7 states. [2020-10-14 10:11:12,894 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 10:11:13,482 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:11:14,720 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 10:11:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:11:16,131 INFO L93 Difference]: Finished difference Result 19076 states and 31702 transitions. [2020-10-14 10:11:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:11:16,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-10-14 10:11:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:11:16,192 INFO L225 Difference]: With dead ends: 19076 [2020-10-14 10:11:16,192 INFO L226 Difference]: Without dead ends: 13277 [2020-10-14 10:11:16,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:11:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2020-10-14 10:11:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 11250. [2020-10-14 10:11:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11250 states. [2020-10-14 10:11:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11250 states to 11250 states and 18313 transitions. [2020-10-14 10:11:17,497 INFO L78 Accepts]: Start accepts. Automaton has 11250 states and 18313 transitions. Word has length 82 [2020-10-14 10:11:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:11:17,498 INFO L479 AbstractCegarLoop]: Abstraction has 11250 states and 18313 transitions. [2020-10-14 10:11:17,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:11:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 11250 states and 18313 transitions. [2020-10-14 10:11:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 10:11:17,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:11:17,512 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] [2020-10-14 10:11:17,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:11:17,513 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:11:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:11:17,513 INFO L82 PathProgramCache]: Analyzing trace with hash 546962601, now seen corresponding path program 1 times [2020-10-14 10:11:17,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:11:17,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245888127] [2020-10-14 10:11:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:11:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:17,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:17,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 10:11:17,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 10:11:17,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:17,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:11:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 10:11:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 10:11:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:17,991 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:11:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:11:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:17,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:18,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:18,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:11:18,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:11:18,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:18,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:18,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 10:11:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:18,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:18,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 10:11:18,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:11:18,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:18,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:11:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:11:18,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:18,144 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 10:11:18,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245888127] [2020-10-14 10:11:18,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:11:18,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 10:11:18,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45803802] [2020-10-14 10:11:18,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 10:11:18,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:11:18,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 10:11:18,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:11:18,146 INFO L87 Difference]: Start difference. First operand 11250 states and 18313 transitions. Second operand 10 states. [2020-10-14 10:11:18,311 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:11:18,638 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 10:11:18,866 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 10:11:19,459 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 10:11:19,671 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-14 10:11:19,905 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-14 10:11:21,319 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 10:11:21,624 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 10:11:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:11:23,858 INFO L93 Difference]: Finished difference Result 27190 states and 48242 transitions. [2020-10-14 10:11:23,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 10:11:23,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-14 10:11:23,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:11:23,924 INFO L225 Difference]: With dead ends: 27190 [2020-10-14 10:11:23,925 INFO L226 Difference]: Without dead ends: 17215 [2020-10-14 10:11:24,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-14 10:11:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17215 states. [2020-10-14 10:11:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17215 to 14580. [2020-10-14 10:11:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14580 states. [2020-10-14 10:11:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14580 states to 14580 states and 25217 transitions. [2020-10-14 10:11:26,159 INFO L78 Accepts]: Start accepts. Automaton has 14580 states and 25217 transitions. Word has length 83 [2020-10-14 10:11:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:11:26,160 INFO L479 AbstractCegarLoop]: Abstraction has 14580 states and 25217 transitions. [2020-10-14 10:11:26,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 10:11:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 14580 states and 25217 transitions. [2020-10-14 10:11:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 10:11:26,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:11:26,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:26,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:11:26,174 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:11:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:11:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash 672928587, now seen corresponding path program 1 times [2020-10-14 10:11:26,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:11:26,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124790432] [2020-10-14 10:11:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:11:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:31,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:31,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 10:11:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 10:11:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:11:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:31,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:11:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 10:11:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:11:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:31,350 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:11:31,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:11:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:31,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:31,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:31,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:11:31,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:11:31,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:31,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:31,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:31,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:31,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:31,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 10:11:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:31,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:31,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:31,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:11:31,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:31,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:11:31,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:31,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:11:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:11:31,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 10:11:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:31,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:31,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 10:11:31,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:11:31,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:31,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 10:11:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 10:11:31,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124790432] [2020-10-14 10:11:31,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:11:31,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 10:11:31,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420994377] [2020-10-14 10:11:31,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:11:31,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:11:31,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:11:31,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:11:31,465 INFO L87 Difference]: Start difference. First operand 14580 states and 25217 transitions. Second operand 5 states. [2020-10-14 10:11:31,906 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:11:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:11:35,728 INFO L93 Difference]: Finished difference Result 30969 states and 57895 transitions. [2020-10-14 10:11:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:11:35,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-14 10:11:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:11:35,788 INFO L225 Difference]: With dead ends: 30969 [2020-10-14 10:11:35,788 INFO L226 Difference]: Without dead ends: 16147 [2020-10-14 10:11:35,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:11:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16147 states. [2020-10-14 10:11:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16147 to 15302. [2020-10-14 10:11:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15302 states. [2020-10-14 10:11:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15302 states to 15302 states and 26402 transitions. [2020-10-14 10:11:37,648 INFO L78 Accepts]: Start accepts. Automaton has 15302 states and 26402 transitions. Word has length 93 [2020-10-14 10:11:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:11:37,648 INFO L479 AbstractCegarLoop]: Abstraction has 15302 states and 26402 transitions. [2020-10-14 10:11:37,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:11:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 15302 states and 26402 transitions. [2020-10-14 10:11:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 10:11:37,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:11:37,658 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:37,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:11:37,659 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:11:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:11:37,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1033025711, now seen corresponding path program 1 times [2020-10-14 10:11:37,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:11:37,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449087530] [2020-10-14 10:11:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:11:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:37,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:37,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:38,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:42,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:42,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:42,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 10:11:42,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:11:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 10:11:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:42,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:11:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 10:11:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 10:11:42,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:42,830 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:11:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:11:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:42,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:42,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:11:42,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:42,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:11:42,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:42,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 10:11:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:42,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:42,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:11:42,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:11:42,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:42,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:42,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 10:11:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:42,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:42,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:42,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 10:11:42,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:11:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:42,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:11:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 10:11:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 10:11:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:43,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 10:11:43,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 10:11:43,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:43,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:11:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:11:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:11:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 10:11:43,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449087530] [2020-10-14 10:11:43,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:11:43,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 10:11:43,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101182246] [2020-10-14 10:11:43,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:11:43,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:11:43,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:11:43,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:11:43,036 INFO L87 Difference]: Start difference. First operand 15302 states and 26402 transitions. Second operand 7 states. [2020-10-14 10:11:43,182 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:11:44,147 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:11:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:11:50,215 INFO L93 Difference]: Finished difference Result 37681 states and 74458 transitions. [2020-10-14 10:11:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 10:11:50,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-14 10:11:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:11:50,303 INFO L225 Difference]: With dead ends: 37681 [2020-10-14 10:11:50,303 INFO L226 Difference]: Without dead ends: 22403 [2020-10-14 10:11:50,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:11:50,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22403 states. [2020-10-14 10:11:52,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22403 to 21451. [2020-10-14 10:11:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21451 states. [2020-10-14 10:11:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21451 states to 21451 states and 36811 transitions. [2020-10-14 10:11:52,912 INFO L78 Accepts]: Start accepts. Automaton has 21451 states and 36811 transitions. Word has length 113 [2020-10-14 10:11:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:11:52,912 INFO L479 AbstractCegarLoop]: Abstraction has 21451 states and 36811 transitions. [2020-10-14 10:11:52,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:11:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 21451 states and 36811 transitions. [2020-10-14 10:11:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 10:11:52,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:11:52,926 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:52,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:11:52,926 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:11:52,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:11:52,926 INFO L82 PathProgramCache]: Analyzing trace with hash -968983423, now seen corresponding path program 1 times [2020-10-14 10:11:52,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:11:52,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216453071] [2020-10-14 10:11:52,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:11:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:54,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 10:11:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:11:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:11:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:57,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:11:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:11:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 10:11:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:58,089 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:11:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:11:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:58,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:58,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:11:58,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:11:58,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:58,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:11:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:58,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:58,225 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 10:11:58,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 10:11:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:58,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:58,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:11:58,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:58,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 10:11:58,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:58,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:11:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:11:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:11:58,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:58,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:11:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:58,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:11:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:11:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 10:11:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:11:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:11:58,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 10:11:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:11:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:11:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 10:11:58,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216453071] [2020-10-14 10:11:58,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:11:58,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 10:11:58,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269830535] [2020-10-14 10:11:58,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:11:58,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:11:58,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:11:58,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:11:58,434 INFO L87 Difference]: Start difference. First operand 21451 states and 36811 transitions. Second operand 8 states. [2020-10-14 10:11:58,583 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:12:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:12:02,716 INFO L93 Difference]: Finished difference Result 40773 states and 75265 transitions. [2020-10-14 10:12:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:12:02,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-10-14 10:12:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:12:02,789 INFO L225 Difference]: With dead ends: 40773 [2020-10-14 10:12:02,789 INFO L226 Difference]: Without dead ends: 18985 [2020-10-14 10:12:02,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:12:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18985 states. [2020-10-14 10:12:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18985 to 18249. [2020-10-14 10:12:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18249 states. [2020-10-14 10:12:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18249 states to 18249 states and 29857 transitions. [2020-10-14 10:12:04,951 INFO L78 Accepts]: Start accepts. Automaton has 18249 states and 29857 transitions. Word has length 108 [2020-10-14 10:12:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:12:04,951 INFO L479 AbstractCegarLoop]: Abstraction has 18249 states and 29857 transitions. [2020-10-14 10:12:04,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:12:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 18249 states and 29857 transitions. [2020-10-14 10:12:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 10:12:04,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:12:04,959 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:04,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:12:04,959 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:12:04,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:12:04,959 INFO L82 PathProgramCache]: Analyzing trace with hash 240563752, now seen corresponding path program 1 times [2020-10-14 10:12:04,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:12:04,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156365650] [2020-10-14 10:12:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:12:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:04,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:05,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:09,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:09,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 10:12:09,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:12:09,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:12:09,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:09,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:12:09,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:12:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 10:12:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:10,130 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:12:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:12:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:10,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:10,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:12:10,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:10,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:12:10,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:10,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:10,264 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 10:12:10,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 10:12:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:10,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 10:12:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 10:12:10,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:10,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:12:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:12:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:12:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:12:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:10,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:10,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:12:10,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:12:10,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:10,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 10:12:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 10:12:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:10,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:10,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 10:12:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:12:10,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:10,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 10:12:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:12:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:12:10,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156365650] [2020-10-14 10:12:10,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:12:10,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 10:12:10,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206271631] [2020-10-14 10:12:10,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:12:10,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:12:10,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:12:10,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:12:10,443 INFO L87 Difference]: Start difference. First operand 18249 states and 29857 transitions. Second operand 9 states. [2020-10-14 10:12:10,596 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:12:10,739 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:12:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:12:14,296 INFO L93 Difference]: Finished difference Result 32091 states and 55350 transitions. [2020-10-14 10:12:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 10:12:14,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-10-14 10:12:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:12:14,346 INFO L225 Difference]: With dead ends: 32091 [2020-10-14 10:12:14,346 INFO L226 Difference]: Without dead ends: 14044 [2020-10-14 10:12:14,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:12:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14044 states. [2020-10-14 10:12:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14044 to 13470. [2020-10-14 10:12:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13470 states. [2020-10-14 10:12:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13470 states to 13470 states and 20947 transitions. [2020-10-14 10:12:15,863 INFO L78 Accepts]: Start accepts. Automaton has 13470 states and 20947 transitions. Word has length 111 [2020-10-14 10:12:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:12:15,863 INFO L479 AbstractCegarLoop]: Abstraction has 13470 states and 20947 transitions. [2020-10-14 10:12:15,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:12:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 13470 states and 20947 transitions. [2020-10-14 10:12:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 10:12:15,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:12:15,869 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:15,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:12:15,869 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:12:15,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:12:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash -257368844, now seen corresponding path program 1 times [2020-10-14 10:12:15,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:12:15,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219084499] [2020-10-14 10:12:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:12:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:18,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:18,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 10:12:18,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:12:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2323 [2020-10-14 10:12:18,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:18,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 10:12:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:12:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:18,360 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:12:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:12:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:12:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:12:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:18,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:12:18,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219084499] [2020-10-14 10:12:18,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:12:18,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:12:18,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641609392] [2020-10-14 10:12:18,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:12:18,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:12:18,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:12:18,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:12:18,385 INFO L87 Difference]: Start difference. First operand 13470 states and 20947 transitions. Second operand 4 states. [2020-10-14 10:12:18,523 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:12:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:12:21,597 INFO L93 Difference]: Finished difference Result 25313 states and 46276 transitions. [2020-10-14 10:12:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:12:21,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-14 10:12:21,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:12:21,651 INFO L225 Difference]: With dead ends: 25313 [2020-10-14 10:12:21,651 INFO L226 Difference]: Without dead ends: 12064 [2020-10-14 10:12:21,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:12:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12064 states. [2020-10-14 10:12:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12064 to 11479. [2020-10-14 10:12:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11479 states. [2020-10-14 10:12:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11479 states to 11479 states and 20513 transitions. [2020-10-14 10:12:22,972 INFO L78 Accepts]: Start accepts. Automaton has 11479 states and 20513 transitions. Word has length 118 [2020-10-14 10:12:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:12:22,973 INFO L479 AbstractCegarLoop]: Abstraction has 11479 states and 20513 transitions. [2020-10-14 10:12:22,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:12:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 11479 states and 20513 transitions. [2020-10-14 10:12:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 10:12:22,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:12:22,978 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:22,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:12:22,978 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:12:22,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:12:22,978 INFO L82 PathProgramCache]: Analyzing trace with hash 450026403, now seen corresponding path program 1 times [2020-10-14 10:12:22,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:12:22,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382998690] [2020-10-14 10:12:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:12:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:23,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:23,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:26,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:26,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:28,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:28,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 10:12:28,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 10:12:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:12:28,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:28,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:12:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:12:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:28,151 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:12:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:12:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:28,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:12:28,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:12:28,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:28,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:28,285 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 10:12:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 10:12:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:28,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:28,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:28,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 10:12:28,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:12:28,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 10:12:28,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:28,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:28,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:28,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:12:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 10:12:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:28,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:28,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:28,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:12:28,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:28,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:12:28,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:28,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:28,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:28,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 10:12:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:28,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:28,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 10:12:28,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:12:28,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:28,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 10:12:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 10:12:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:28,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:28,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:28,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 10:12:28,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:12:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:12:28,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:28,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 10:12:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:28,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 10:12:28,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382998690] [2020-10-14 10:12:28,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:12:28,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 10:12:28,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036227656] [2020-10-14 10:12:28,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:12:28,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:12:28,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:12:28,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:12:28,512 INFO L87 Difference]: Start difference. First operand 11479 states and 20513 transitions. Second operand 7 states. [2020-10-14 10:12:28,756 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:12:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:12:32,431 INFO L93 Difference]: Finished difference Result 24489 states and 44914 transitions. [2020-10-14 10:12:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 10:12:32,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-14 10:12:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:12:32,487 INFO L225 Difference]: With dead ends: 24489 [2020-10-14 10:12:32,487 INFO L226 Difference]: Without dead ends: 11965 [2020-10-14 10:12:32,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 10:12:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11965 states. [2020-10-14 10:12:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11965 to 9397. [2020-10-14 10:12:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9397 states. [2020-10-14 10:12:33,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 13655 transitions. [2020-10-14 10:12:33,510 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 13655 transitions. Word has length 162 [2020-10-14 10:12:33,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:12:33,510 INFO L479 AbstractCegarLoop]: Abstraction has 9397 states and 13655 transitions. [2020-10-14 10:12:33,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:12:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 13655 transitions. [2020-10-14 10:12:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 10:12:33,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:12:33,513 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:33,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:12:33,513 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:12:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:12:33,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1433600357, now seen corresponding path program 1 times [2020-10-14 10:12:33,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:12:33,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102019832] [2020-10-14 10:12:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:12:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:33,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:33,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:33,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:34,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:38,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:38,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 10:12:38,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 10:12:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:12:38,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:38,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 10:12:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:12:38,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:38,683 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:12:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:12:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:38,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:38,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:12:38,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:12:38,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:38,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:38,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:38,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 10:12:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:38,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:38,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:12:38,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:12:38,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:38,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:12:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:38,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 10:12:38,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:12:38,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:38,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 10:12:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:38,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:38,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 10:12:38,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:12:38,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:38,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 10:12:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:12:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 10:12:38,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102019832] [2020-10-14 10:12:38,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:12:38,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:12:38,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030963628] [2020-10-14 10:12:38,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:12:38,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:12:38,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:12:38,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:12:38,870 INFO L87 Difference]: Start difference. First operand 9397 states and 13655 transitions. Second operand 6 states. [2020-10-14 10:12:39,276 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:12:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:12:41,545 INFO L93 Difference]: Finished difference Result 17858 states and 27951 transitions. [2020-10-14 10:12:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 10:12:41,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-10-14 10:12:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:12:41,589 INFO L225 Difference]: With dead ends: 17858 [2020-10-14 10:12:41,590 INFO L226 Difference]: Without dead ends: 9007 [2020-10-14 10:12:41,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:12:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9007 states. [2020-10-14 10:12:42,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9007 to 8794. [2020-10-14 10:12:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8794 states. [2020-10-14 10:12:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8794 states to 8794 states and 12811 transitions. [2020-10-14 10:12:42,501 INFO L78 Accepts]: Start accepts. Automaton has 8794 states and 12811 transitions. Word has length 141 [2020-10-14 10:12:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:12:42,501 INFO L479 AbstractCegarLoop]: Abstraction has 8794 states and 12811 transitions. [2020-10-14 10:12:42,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:12:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 8794 states and 12811 transitions. [2020-10-14 10:12:42,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 10:12:42,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:12:42,504 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:42,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:12:42,504 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:12:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:12:42,504 INFO L82 PathProgramCache]: Analyzing trace with hash -391982475, now seen corresponding path program 1 times [2020-10-14 10:12:42,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:12:42,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589724313] [2020-10-14 10:12:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:12:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:42,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:42,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:43,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:47,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:47,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 10:12:47,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:12:47,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 10:12:47,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:47,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:12:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:12:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 10:12:47,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:47,718 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:12:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:12:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:47,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:47,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:47,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:12:47,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:12:47,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:47,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 10:12:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:47,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:47,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:12:47,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:47,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:12:47,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:47,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:47,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:47,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:47,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:47,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:12:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:47,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:47,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:12:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:47,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 10:12:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 10:12:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 10:12:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:47,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:12:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:12:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:12:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 10:12:47,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589724313] [2020-10-14 10:12:47,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:12:47,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 10:12:47,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457488343] [2020-10-14 10:12:47,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 10:12:47,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:12:47,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 10:12:47,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:12:47,964 INFO L87 Difference]: Start difference. First operand 8794 states and 12811 transitions. Second operand 8 states. [2020-10-14 10:12:48,110 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:12:49,563 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:12:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:12:50,903 INFO L93 Difference]: Finished difference Result 17451 states and 27257 transitions. [2020-10-14 10:12:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 10:12:50,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-10-14 10:12:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:12:50,942 INFO L225 Difference]: With dead ends: 17451 [2020-10-14 10:12:50,943 INFO L226 Difference]: Without dead ends: 7730 [2020-10-14 10:12:50,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-14 10:12:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7730 states. [2020-10-14 10:12:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7730 to 6972. [2020-10-14 10:12:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6972 states. [2020-10-14 10:12:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 9587 transitions. [2020-10-14 10:12:51,664 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 9587 transitions. Word has length 142 [2020-10-14 10:12:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:12:51,664 INFO L479 AbstractCegarLoop]: Abstraction has 6972 states and 9587 transitions. [2020-10-14 10:12:51,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 10:12:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 9587 transitions. [2020-10-14 10:12:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:12:51,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:12:51,667 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:51,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:12:51,667 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:12:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:12:51,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1359578003, now seen corresponding path program 1 times [2020-10-14 10:12:51,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:12:51,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545761530] [2020-10-14 10:12:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:12:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:52,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:56,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:56,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:12:56,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:12:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:12:56,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:56,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 10:12:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 10:12:56,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:56,834 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:12:56,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:12:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:56,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:56,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:12:56,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:12:56,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:56,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 10:12:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:56,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:56,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:12:56,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:56,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:12:56,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:56,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:56,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:12:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:56,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:56,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 10:12:56,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:12:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:12:56,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:56,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:12:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:12:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:56,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 10:12:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:12:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:12:57,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:12:57,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:12:57,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:12:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 10:12:57,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:12:57,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:12:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:12:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:12:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 10:12:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:12:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 10:12:57,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545761530] [2020-10-14 10:12:57,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:12:57,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 10:12:57,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169770106] [2020-10-14 10:12:57,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:12:57,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:12:57,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:12:57,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:12:57,038 INFO L87 Difference]: Start difference. First operand 6972 states and 9587 transitions. Second operand 6 states. [2020-10-14 10:12:58,224 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:12:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:12:59,883 INFO L93 Difference]: Finished difference Result 7114 states and 9739 transitions. [2020-10-14 10:12:59,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 10:12:59,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-14 10:12:59,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:12:59,906 INFO L225 Difference]: With dead ends: 7114 [2020-10-14 10:12:59,907 INFO L226 Difference]: Without dead ends: 6917 [2020-10-14 10:12:59,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:12:59,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6917 states. [2020-10-14 10:13:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6917 to 6822. [2020-10-14 10:13:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6822 states. [2020-10-14 10:13:00,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6822 states to 6822 states and 9408 transitions. [2020-10-14 10:13:00,574 INFO L78 Accepts]: Start accepts. Automaton has 6822 states and 9408 transitions. Word has length 171 [2020-10-14 10:13:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:13:00,575 INFO L479 AbstractCegarLoop]: Abstraction has 6822 states and 9408 transitions. [2020-10-14 10:13:00,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:13:00,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6822 states and 9408 transitions. [2020-10-14 10:13:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:13:00,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:13:00,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:00,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:13:00,578 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:13:00,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:13:00,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2082216077, now seen corresponding path program 1 times [2020-10-14 10:13:00,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:13:00,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205866082] [2020-10-14 10:13:00,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:13:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:00,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 10:13:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:13:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:13:05,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:05,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:13:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 10:13:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 10:13:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:05,744 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:13:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:13:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:05,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:05,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:13:05,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:13:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:13:05,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:05,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:13:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:13:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:13:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:05,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 10:13:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:05,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:13:05,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:13:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:13:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:05,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:13:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 10:13:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:13:05,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:13:05,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 10:13:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:05,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:05,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 10:13:05,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:13:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:13:05,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:05,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:13:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 10:13:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:13:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:05,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 10:13:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:05,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:05,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:05,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:13:05,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:13:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:13:05,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:05,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:13:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 10:13:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:13:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 10:13:05,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205866082] [2020-10-14 10:13:05,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:13:05,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:13:05,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21792906] [2020-10-14 10:13:05,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:13:05,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:13:05,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:13:05,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:13:05,946 INFO L87 Difference]: Start difference. First operand 6822 states and 9408 transitions. Second operand 6 states. [2020-10-14 10:13:06,096 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:13:08,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:13:08,147 INFO L93 Difference]: Finished difference Result 13493 states and 18615 transitions. [2020-10-14 10:13:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 10:13:08,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-14 10:13:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:13:08,181 INFO L225 Difference]: With dead ends: 13493 [2020-10-14 10:13:08,182 INFO L226 Difference]: Without dead ends: 6720 [2020-10-14 10:13:08,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:13:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2020-10-14 10:13:08,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 6651. [2020-10-14 10:13:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6651 states. [2020-10-14 10:13:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6651 states to 6651 states and 9155 transitions. [2020-10-14 10:13:08,850 INFO L78 Accepts]: Start accepts. Automaton has 6651 states and 9155 transitions. Word has length 171 [2020-10-14 10:13:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:13:08,851 INFO L479 AbstractCegarLoop]: Abstraction has 6651 states and 9155 transitions. [2020-10-14 10:13:08,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:13:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6651 states and 9155 transitions. [2020-10-14 10:13:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 10:13:08,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:13:08,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:08,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:13:08,854 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:13:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:13:08,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1882589421, now seen corresponding path program 1 times [2020-10-14 10:13:08,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:13:08,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766911188] [2020-10-14 10:13:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:13:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:13,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:13,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 10:13:13,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:13:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:13:13,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:13,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:13:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 10:13:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 10:13:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:14,081 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 10:13:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:13:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:14,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:14,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:13:14,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:13:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:13:14,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:14,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:13:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:13:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:13:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 10:13:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:14,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:14,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:14,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:13:14,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:13:14,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 10:13:14,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:14,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:14,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:13:14,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:13:14,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:13:14,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 10:13:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:14,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:14,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:14,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 10:13:14,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:13:14,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:13:14,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:14,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:13:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:13:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:13:14,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 10:13:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:14,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:14,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:13:14,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 10:13:14,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:13:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 10:13:14,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:13:14,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:13:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:13:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:13:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 10:13:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:13:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 10:13:14,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766911188] [2020-10-14 10:13:14,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:13:14,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 10:13:14,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215711033] [2020-10-14 10:13:14,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 10:13:14,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:13:14,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 10:13:14,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 10:13:14,423 INFO L87 Difference]: Start difference. First operand 6651 states and 9155 transitions. Second operand 15 states. [2020-10-14 10:13:14,753 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 140 [2020-10-14 10:13:15,237 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2020-10-14 10:13:15,644 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 146 [2020-10-14 10:13:15,896 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-14 10:13:16,440 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2020-10-14 10:13:16,789 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 146 [2020-10-14 10:13:16,973 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-14 10:13:17,615 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 143 [2020-10-14 10:13:18,177 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:13:18,535 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 10:13:19,210 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 10:13:19,425 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 10:13:20,095 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 10:13:20,964 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 10:13:21,169 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-14 10:13:21,482 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 10:13:21,690 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 10:13:22,082 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 145 [2020-10-14 10:13:22,295 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-14 10:13:23,342 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 10:13:23,803 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 10:13:23,994 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 10:13:24,590 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 142 [2020-10-14 10:13:25,415 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 10:13:25,607 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-14 10:13:26,981 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 10:13:27,472 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 10:13:27,679 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-14 10:13:27,851 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 10:13:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:13:28,815 INFO L93 Difference]: Finished difference Result 23511 states and 41934 transitions. [2020-10-14 10:13:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-14 10:13:28,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 166 [2020-10-14 10:13:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:13:28,940 INFO L225 Difference]: With dead ends: 23511 [2020-10-14 10:13:28,940 INFO L226 Difference]: Without dead ends: 17175 [2020-10-14 10:13:28,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1896 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=883, Invalid=4817, Unknown=0, NotChecked=0, Total=5700 [2020-10-14 10:13:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17175 states. [2020-10-14 10:13:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17175 to 14625. [2020-10-14 10:13:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14625 states. [2020-10-14 10:13:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14625 states to 14625 states and 23535 transitions. [2020-10-14 10:13:30,711 INFO L78 Accepts]: Start accepts. Automaton has 14625 states and 23535 transitions. Word has length 166 [2020-10-14 10:13:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:13:30,711 INFO L479 AbstractCegarLoop]: Abstraction has 14625 states and 23535 transitions. [2020-10-14 10:13:30,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 10:13:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 14625 states and 23535 transitions. [2020-10-14 10:13:30,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 10:13:30,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:13:30,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:30,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:13:30,714 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:13:30,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:13:30,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1221512054, now seen corresponding path program 1 times [2020-10-14 10:13:30,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:13:30,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677234159] [2020-10-14 10:13:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:13:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:13:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:13:31,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking...