/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:41:59,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:41:59,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:41:59,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:41:59,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:41:59,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:41:59,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:41:59,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:41:59,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:41:59,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:41:59,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:41:59,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:41:59,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:41:59,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:41:59,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:41:59,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:41:59,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:41:59,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:41:59,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:41:59,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:41:59,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:41:59,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:41:59,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:41:59,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:41:59,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:41:59,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:41:59,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:41:59,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:41:59,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:41:59,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:41:59,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:41:59,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:41:59,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:41:59,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:41:59,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:41:59,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:41:59,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:41:59,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:41:59,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:41:59,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:41:59,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:41:59,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:41:59,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:41:59,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:41:59,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:41:59,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:41:59,871 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:41:59,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:41:59,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:41:59,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:41:59,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:41:59,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:41:59,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:41:59,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:41:59,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:41:59,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:41:59,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:41:59,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:41:59,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:41:59,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:41:59,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:41:59,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:41:59,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:41:59,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:41:59,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:41:59,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:41:59,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:41:59,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:41:59,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:41:59,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:41:59,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:41:59,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:42:00,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:42:00,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:42:00,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:42:00,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:42:00,201 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:42:00,202 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-14 08:42:00,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fa183207/270f4a5d0c394e2b8b75d6139c9991f0/FLAG12f0b2ca5 [2020-10-14 08:42:00,794 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:42:00,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-14 08:42:00,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fa183207/270f4a5d0c394e2b8b75d6139c9991f0/FLAG12f0b2ca5 [2020-10-14 08:42:01,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fa183207/270f4a5d0c394e2b8b75d6139c9991f0 [2020-10-14 08:42:01,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:42:01,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:42:01,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:42:01,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:42:01,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:42:01,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9e9960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01, skipping insertion in model container [2020-10-14 08:42:01,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:42:01,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:42:01,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:42:01,525 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:42:01,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:42:01,721 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:42:01,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01 WrapperNode [2020-10-14 08:42:01,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:42:01,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:42:01,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:42:01,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:42:01,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (1/1) ... [2020-10-14 08:42:01,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:42:01,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:42:01,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:42:01,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:42:01,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:42:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:42:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:42:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:42:01,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:42:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:42:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:42:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:42:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:42:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:42:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:42:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:42:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:42:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:42:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:42:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:42:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:42:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:42:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:42:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:42:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:42:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:42:02,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:42:02,554 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:42:02,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:42:02 BoogieIcfgContainer [2020-10-14 08:42:02,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:42:02,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:42:02,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:42:02,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:42:02,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:42:01" (1/3) ... [2020-10-14 08:42:02,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3e9eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:42:02, skipping insertion in model container [2020-10-14 08:42:02,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:01" (2/3) ... [2020-10-14 08:42:02,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3e9eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:42:02, skipping insertion in model container [2020-10-14 08:42:02,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:42:02" (3/3) ... [2020-10-14 08:42:02,567 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-14 08:42:02,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:42:02,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:42:02,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:42:02,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:42:02,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:42:02,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:42:02,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:42:02,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:42:02,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:42:02,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:42:02,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:42:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-10-14 08:42:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 08:42:02,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:02,660 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] [2020-10-14 08:42:02,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:02,667 INFO L82 PathProgramCache]: Analyzing trace with hash -998305872, now seen corresponding path program 1 times [2020-10-14 08:42:02,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:02,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227672271] [2020-10-14 08:42:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:03,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:03,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:03,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:04,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:08,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:08,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 08:42:08,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:42:08,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 08:42:08,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:08,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 08:42:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:42:08,275 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:42:08,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:08,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:08,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:08,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:42:08,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:08,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:08,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227672271] [2020-10-14 08:42:08,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:08,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:42:08,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698514171] [2020-10-14 08:42:08,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:08,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:08,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:08,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:08,362 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 6 states. [2020-10-14 08:42:08,556 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:42:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:09,292 INFO L93 Difference]: Finished difference Result 226 states and 371 transitions. [2020-10-14 08:42:09,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:42:09,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-14 08:42:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:09,312 INFO L225 Difference]: With dead ends: 226 [2020-10-14 08:42:09,312 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 08:42:09,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:09,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 08:42:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-14 08:42:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 08:42:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 167 transitions. [2020-10-14 08:42:09,384 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 167 transitions. Word has length 66 [2020-10-14 08:42:09,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:09,385 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 167 transitions. [2020-10-14 08:42:09,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 167 transitions. [2020-10-14 08:42:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 08:42:09,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:09,388 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] [2020-10-14 08:42:09,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:42:09,389 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:09,389 INFO L82 PathProgramCache]: Analyzing trace with hash 898837651, now seen corresponding path program 1 times [2020-10-14 08:42:09,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:09,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86737935] [2020-10-14 08:42:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:14,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 08:42:14,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:42:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:42:14,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:14,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:14,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 08:42:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 08:42:14,632 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:42:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:14,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:14,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:14,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:14,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:42:14,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:14,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:14,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86737935] [2020-10-14 08:42:14,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:14,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:42:14,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246312523] [2020-10-14 08:42:14,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:14,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:14,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:14,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:14,695 INFO L87 Difference]: Start difference. First operand 124 states and 167 transitions. Second operand 6 states. [2020-10-14 08:42:14,850 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:42:15,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:15,344 INFO L93 Difference]: Finished difference Result 202 states and 285 transitions. [2020-10-14 08:42:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:42:15,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 08:42:15,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:15,347 INFO L225 Difference]: With dead ends: 202 [2020-10-14 08:42:15,347 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 08:42:15,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 08:42:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-14 08:42:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 08:42:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2020-10-14 08:42:15,373 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 67 [2020-10-14 08:42:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:15,374 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2020-10-14 08:42:15,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2020-10-14 08:42:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 08:42:15,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:15,378 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] [2020-10-14 08:42:15,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:42:15,378 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:15,379 INFO L82 PathProgramCache]: Analyzing trace with hash -929721872, now seen corresponding path program 1 times [2020-10-14 08:42:15,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:15,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106527449] [2020-10-14 08:42:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:20,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 08:42:20,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:42:20,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:42:20,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:20,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:20,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:20,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:20,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 08:42:20,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:20,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:20,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:42:20,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:20,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:20,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106527449] [2020-10-14 08:42:20,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:20,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:42:20,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636201331] [2020-10-14 08:42:20,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:20,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:20,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:20,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:20,632 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 6 states. [2020-10-14 08:42:20,794 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-14 08:42:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:21,278 INFO L93 Difference]: Finished difference Result 262 states and 371 transitions. [2020-10-14 08:42:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:42:21,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 08:42:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:21,282 INFO L225 Difference]: With dead ends: 262 [2020-10-14 08:42:21,282 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 08:42:21,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 08:42:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-10-14 08:42:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-14 08:42:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 247 transitions. [2020-10-14 08:42:21,329 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 247 transitions. Word has length 68 [2020-10-14 08:42:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:21,330 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 247 transitions. [2020-10-14 08:42:21,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 247 transitions. [2020-10-14 08:42:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 08:42:21,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:21,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:21,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:42:21,337 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:21,338 INFO L82 PathProgramCache]: Analyzing trace with hash 773340612, now seen corresponding path program 1 times [2020-10-14 08:42:21,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:21,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949464002] [2020-10-14 08:42:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:23,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:26,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 08:42:26,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:42:26,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:42:26,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:26,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 08:42:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:26,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:26,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:26,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:26,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:42:26,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:26,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:26,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:26,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949464002] [2020-10-14 08:42:26,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:26,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:42:26,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190384233] [2020-10-14 08:42:26,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:26,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:26,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:26,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:26,580 INFO L87 Difference]: Start difference. First operand 178 states and 247 transitions. Second operand 6 states. [2020-10-14 08:42:26,753 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:42:27,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:27,207 INFO L93 Difference]: Finished difference Result 443 states and 645 transitions. [2020-10-14 08:42:27,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:42:27,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 08:42:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:27,210 INFO L225 Difference]: With dead ends: 443 [2020-10-14 08:42:27,210 INFO L226 Difference]: Without dead ends: 299 [2020-10-14 08:42:27,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:42:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-14 08:42:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2020-10-14 08:42:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-14 08:42:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 429 transitions. [2020-10-14 08:42:27,238 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 429 transitions. Word has length 69 [2020-10-14 08:42:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:27,239 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 429 transitions. [2020-10-14 08:42:27,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:42:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 429 transitions. [2020-10-14 08:42:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 08:42:27,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:27,240 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] [2020-10-14 08:42:27,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:42:27,241 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:27,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:27,241 INFO L82 PathProgramCache]: Analyzing trace with hash -562645102, now seen corresponding path program 1 times [2020-10-14 08:42:27,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:27,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053632047] [2020-10-14 08:42:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:32,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:32,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 08:42:32,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:42:32,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:42:32,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:32,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 08:42:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:42:32,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:32,405 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:42:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:32,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:42:32,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:32,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:32,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053632047] [2020-10-14 08:42:32,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:32,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:32,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026863370] [2020-10-14 08:42:32,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:32,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:32,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:32,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:32,448 INFO L87 Difference]: Start difference. First operand 297 states and 429 transitions. Second operand 4 states. [2020-10-14 08:42:32,632 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:42:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:33,329 INFO L93 Difference]: Finished difference Result 712 states and 1059 transitions. [2020-10-14 08:42:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:33,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 08:42:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:33,334 INFO L225 Difference]: With dead ends: 712 [2020-10-14 08:42:33,334 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 08:42:33,336 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 08:42:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 08:42:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 514. [2020-10-14 08:42:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-14 08:42:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 753 transitions. [2020-10-14 08:42:33,420 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 753 transitions. Word has length 70 [2020-10-14 08:42:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:33,420 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 753 transitions. [2020-10-14 08:42:33,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 753 transitions. [2020-10-14 08:42:33,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 08:42:33,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:33,422 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] [2020-10-14 08:42:33,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:42:33,423 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:33,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1311267794, now seen corresponding path program 1 times [2020-10-14 08:42:33,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:33,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41621615] [2020-10-14 08:42:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:33,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:38,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:38,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 08:42:38,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:42:38,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:42:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:38,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:42:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:42:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:42:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:38,622 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:42:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:38,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:38,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:38,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:42:38,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:38,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:38,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41621615] [2020-10-14 08:42:38,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:38,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:42:38,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45949705] [2020-10-14 08:42:38,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:42:38,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:38,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:42:38,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:42:38,676 INFO L87 Difference]: Start difference. First operand 514 states and 753 transitions. Second operand 7 states. [2020-10-14 08:42:38,848 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-14 08:42:39,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:39,359 INFO L93 Difference]: Finished difference Result 1927 states and 2876 transitions. [2020-10-14 08:42:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:42:39,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-10-14 08:42:39,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:39,370 INFO L225 Difference]: With dead ends: 1927 [2020-10-14 08:42:39,371 INFO L226 Difference]: Without dead ends: 1553 [2020-10-14 08:42:39,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:42:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2020-10-14 08:42:39,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 708. [2020-10-14 08:42:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-10-14 08:42:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1049 transitions. [2020-10-14 08:42:39,432 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1049 transitions. Word has length 72 [2020-10-14 08:42:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:39,433 INFO L479 AbstractCegarLoop]: Abstraction has 708 states and 1049 transitions. [2020-10-14 08:42:39,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:42:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1049 transitions. [2020-10-14 08:42:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 08:42:39,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:39,440 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] [2020-10-14 08:42:39,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:42:39,441 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash -600434807, now seen corresponding path program 1 times [2020-10-14 08:42:39,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:39,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016717115] [2020-10-14 08:42:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:44,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 08:42:44,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:42:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:42:44,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:44,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 08:42:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:44,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:44,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:44,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:44,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:44,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:44,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:42:44,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:44,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:44,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016717115] [2020-10-14 08:42:44,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:44,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:44,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122639455] [2020-10-14 08:42:44,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:44,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:44,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:44,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:44,610 INFO L87 Difference]: Start difference. First operand 708 states and 1049 transitions. Second operand 4 states. [2020-10-14 08:42:45,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:45,164 INFO L93 Difference]: Finished difference Result 1780 states and 2655 transitions. [2020-10-14 08:42:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:42:45,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-14 08:42:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:45,170 INFO L225 Difference]: With dead ends: 1780 [2020-10-14 08:42:45,171 INFO L226 Difference]: Without dead ends: 1212 [2020-10-14 08:42:45,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-14 08:42:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1210. [2020-10-14 08:42:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-10-14 08:42:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1777 transitions. [2020-10-14 08:42:45,267 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1777 transitions. Word has length 72 [2020-10-14 08:42:45,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:45,267 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1777 transitions. [2020-10-14 08:42:45,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1777 transitions. [2020-10-14 08:42:45,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 08:42:45,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:45,269 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] [2020-10-14 08:42:45,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:42:45,270 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:45,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:45,270 INFO L82 PathProgramCache]: Analyzing trace with hash -431668792, now seen corresponding path program 1 times [2020-10-14 08:42:45,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:45,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375419410] [2020-10-14 08:42:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:47,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:50,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:50,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 08:42:50,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:42:50,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:42:50,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:50,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:50,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 08:42:50,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:42:50,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:50,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:50,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:50,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:50,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:50,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:50,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375419410] [2020-10-14 08:42:50,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:50,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:42:50,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168995118] [2020-10-14 08:42:50,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:42:50,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:50,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:42:50,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:42:50,432 INFO L87 Difference]: Start difference. First operand 1210 states and 1777 transitions. Second operand 4 states. [2020-10-14 08:42:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:51,142 INFO L93 Difference]: Finished difference Result 3014 states and 4449 transitions. [2020-10-14 08:42:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:42:51,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-14 08:42:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:51,153 INFO L225 Difference]: With dead ends: 3014 [2020-10-14 08:42:51,153 INFO L226 Difference]: Without dead ends: 1944 [2020-10-14 08:42:51,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:42:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-10-14 08:42:51,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1942. [2020-10-14 08:42:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1942 states. [2020-10-14 08:42:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2843 transitions. [2020-10-14 08:42:51,284 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2843 transitions. Word has length 72 [2020-10-14 08:42:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:51,285 INFO L479 AbstractCegarLoop]: Abstraction has 1942 states and 2843 transitions. [2020-10-14 08:42:51,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:42:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2843 transitions. [2020-10-14 08:42:51,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 08:42:51,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:51,286 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] [2020-10-14 08:42:51,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:42:51,287 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:51,287 INFO L82 PathProgramCache]: Analyzing trace with hash -2002980121, now seen corresponding path program 1 times [2020-10-14 08:42:51,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:51,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609717760] [2020-10-14 08:42:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:51,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:52,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:56,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 08:42:56,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:42:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:42:56,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:56,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:42:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:42:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:42:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:42:56,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:56,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:42:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:42:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:42:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:56,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609717760] [2020-10-14 08:42:56,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:56,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:42:56,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930421361] [2020-10-14 08:42:56,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:42:56,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:56,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:42:56,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:42:56,475 INFO L87 Difference]: Start difference. First operand 1942 states and 2843 transitions. Second operand 7 states. [2020-10-14 08:42:56,627 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-14 08:42:57,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:42:57,568 INFO L93 Difference]: Finished difference Result 6403 states and 9386 transitions. [2020-10-14 08:42:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:42:57,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-10-14 08:42:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:42:57,593 INFO L225 Difference]: With dead ends: 6403 [2020-10-14 08:42:57,594 INFO L226 Difference]: Without dead ends: 5337 [2020-10-14 08:42:57,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:42:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2020-10-14 08:42:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 3034. [2020-10-14 08:42:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3034 states. [2020-10-14 08:42:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4443 transitions. [2020-10-14 08:42:57,911 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4443 transitions. Word has length 72 [2020-10-14 08:42:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:42:57,912 INFO L479 AbstractCegarLoop]: Abstraction has 3034 states and 4443 transitions. [2020-10-14 08:42:57,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:42:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4443 transitions. [2020-10-14 08:42:57,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 08:42:57,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:57,915 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] [2020-10-14 08:42:57,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:42:57,915 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:57,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1251833981, now seen corresponding path program 1 times [2020-10-14 08:42:57,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:57,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406681008] [2020-10-14 08:42:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:57,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:01,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 08:43:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:43:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:43:02,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:02,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:43:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:43:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:43:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:03,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:03,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:03,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:03,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:43:03,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:03,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:03,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406681008] [2020-10-14 08:43:03,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:03,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:43:03,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682352431] [2020-10-14 08:43:03,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:43:03,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:43:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:43:03,126 INFO L87 Difference]: Start difference. First operand 3034 states and 4443 transitions. Second operand 7 states. [2020-10-14 08:43:03,278 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-14 08:43:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:04,155 INFO L93 Difference]: Finished difference Result 7329 states and 10738 transitions. [2020-10-14 08:43:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:43:04,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-10-14 08:43:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:04,183 INFO L225 Difference]: With dead ends: 7329 [2020-10-14 08:43:04,184 INFO L226 Difference]: Without dead ends: 6263 [2020-10-14 08:43:04,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:43:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2020-10-14 08:43:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 3782. [2020-10-14 08:43:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3782 states. [2020-10-14 08:43:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5543 transitions. [2020-10-14 08:43:04,509 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5543 transitions. Word has length 72 [2020-10-14 08:43:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:04,510 INFO L479 AbstractCegarLoop]: Abstraction has 3782 states and 5543 transitions. [2020-10-14 08:43:04,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:43:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5543 transitions. [2020-10-14 08:43:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 08:43:04,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:04,511 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] [2020-10-14 08:43:04,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:43:04,512 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:04,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:04,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2100434244, now seen corresponding path program 1 times [2020-10-14 08:43:04,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:04,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351234182] [2020-10-14 08:43:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:09,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:43:09,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:09,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:09,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:09,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:09,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:09,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:43:09,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:09,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:09,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351234182] [2020-10-14 08:43:09,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:09,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:43:09,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164214613] [2020-10-14 08:43:09,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:09,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:09,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:09,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:09,687 INFO L87 Difference]: Start difference. First operand 3782 states and 5543 transitions. Second operand 6 states. [2020-10-14 08:43:10,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:10,458 INFO L93 Difference]: Finished difference Result 6775 states and 9922 transitions. [2020-10-14 08:43:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:43:10,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-14 08:43:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:10,485 INFO L225 Difference]: With dead ends: 6775 [2020-10-14 08:43:10,485 INFO L226 Difference]: Without dead ends: 5709 [2020-10-14 08:43:10,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5709 states. [2020-10-14 08:43:10,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5709 to 5239. [2020-10-14 08:43:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5239 states. [2020-10-14 08:43:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 7697 transitions. [2020-10-14 08:43:10,906 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 7697 transitions. Word has length 72 [2020-10-14 08:43:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:10,906 INFO L479 AbstractCegarLoop]: Abstraction has 5239 states and 7697 transitions. [2020-10-14 08:43:10,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 7697 transitions. [2020-10-14 08:43:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 08:43:10,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:10,908 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] [2020-10-14 08:43:10,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:43:10,908 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:10,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1275273369, now seen corresponding path program 1 times [2020-10-14 08:43:10,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:10,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535183995] [2020-10-14 08:43:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:15,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 08:43:15,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:43:15,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:43:15,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:15,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:43:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:43:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 08:43:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:16,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:16,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:16,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:16,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:43:16,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:16,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:16,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:16,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:16,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:16,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:16,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535183995] [2020-10-14 08:43:16,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:16,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:43:16,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105323943] [2020-10-14 08:43:16,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:43:16,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:16,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:43:16,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:43:16,102 INFO L87 Difference]: Start difference. First operand 5239 states and 7697 transitions. Second operand 5 states. [2020-10-14 08:43:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:17,003 INFO L93 Difference]: Finished difference Result 12080 states and 17776 transitions. [2020-10-14 08:43:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:43:17,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-14 08:43:17,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:17,037 INFO L225 Difference]: With dead ends: 12080 [2020-10-14 08:43:17,038 INFO L226 Difference]: Without dead ends: 7038 [2020-10-14 08:43:17,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2020-10-14 08:43:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 7036. [2020-10-14 08:43:17,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7036 states. [2020-10-14 08:43:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 10292 transitions. [2020-10-14 08:43:17,490 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 10292 transitions. Word has length 73 [2020-10-14 08:43:17,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:17,491 INFO L479 AbstractCegarLoop]: Abstraction has 7036 states and 10292 transitions. [2020-10-14 08:43:17,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:43:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 10292 transitions. [2020-10-14 08:43:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 08:43:17,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:17,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:17,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:43:17,493 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:17,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash -498739989, now seen corresponding path program 1 times [2020-10-14 08:43:17,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:17,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557738163] [2020-10-14 08:43:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:17,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:20,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:22,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 08:43:22,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:43:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:43:22,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:22,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:43:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 08:43:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:43:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:22,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:22,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:22,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:22,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:43:22,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:22,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:22,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:22,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557738163] [2020-10-14 08:43:22,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:22,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:43:22,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973542553] [2020-10-14 08:43:22,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:43:22,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:22,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:43:22,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:43:22,684 INFO L87 Difference]: Start difference. First operand 7036 states and 10292 transitions. Second operand 5 states. [2020-10-14 08:43:23,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:23,605 INFO L93 Difference]: Finished difference Result 10734 states and 15645 transitions. [2020-10-14 08:43:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:43:23,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-14 08:43:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:23,629 INFO L225 Difference]: With dead ends: 10734 [2020-10-14 08:43:23,629 INFO L226 Difference]: Without dead ends: 10732 [2020-10-14 08:43:23,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10732 states. [2020-10-14 08:43:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10732 to 7068. [2020-10-14 08:43:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2020-10-14 08:43:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 10268 transitions. [2020-10-14 08:43:24,138 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 10268 transitions. Word has length 73 [2020-10-14 08:43:24,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:24,139 INFO L479 AbstractCegarLoop]: Abstraction has 7068 states and 10268 transitions. [2020-10-14 08:43:24,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:43:24,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 10268 transitions. [2020-10-14 08:43:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:43:24,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:24,140 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] [2020-10-14 08:43:24,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:43:24,141 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:24,141 INFO L82 PathProgramCache]: Analyzing trace with hash 807327240, now seen corresponding path program 1 times [2020-10-14 08:43:24,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:24,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009452551] [2020-10-14 08:43:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:27,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:29,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:29,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:43:29,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:43:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:43:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:29,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:43:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:43:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:43:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:29,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:29,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:29,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:29,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:29,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:43:29,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:29,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:29,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009452551] [2020-10-14 08:43:29,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:29,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:43:29,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522246807] [2020-10-14 08:43:29,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:43:29,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:29,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:43:29,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:29,434 INFO L87 Difference]: Start difference. First operand 7068 states and 10268 transitions. Second operand 9 states. [2020-10-14 08:43:29,599 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 08:43:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:31,262 INFO L93 Difference]: Finished difference Result 17583 states and 25470 transitions. [2020-10-14 08:43:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:43:31,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-14 08:43:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:31,287 INFO L225 Difference]: With dead ends: 17583 [2020-10-14 08:43:31,287 INFO L226 Difference]: Without dead ends: 10697 [2020-10-14 08:43:31,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:43:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2020-10-14 08:43:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 7068. [2020-10-14 08:43:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2020-10-14 08:43:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 10253 transitions. [2020-10-14 08:43:31,948 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 10253 transitions. Word has length 74 [2020-10-14 08:43:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:31,948 INFO L479 AbstractCegarLoop]: Abstraction has 7068 states and 10253 transitions. [2020-10-14 08:43:31,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:43:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 10253 transitions. [2020-10-14 08:43:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:43:31,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:31,949 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] [2020-10-14 08:43:31,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:43:31,950 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash -763984089, now seen corresponding path program 1 times [2020-10-14 08:43:31,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:31,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241758803] [2020-10-14 08:43:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:31,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:32,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:32,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:36,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:36,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:43:36,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:43:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:43:36,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:36,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:43:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:43:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 08:43:36,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:37,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:37,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:37,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:37,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:43:37,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:37,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:37,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241758803] [2020-10-14 08:43:37,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:37,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:43:37,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106911444] [2020-10-14 08:43:37,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:43:37,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:37,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:43:37,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:43:37,329 INFO L87 Difference]: Start difference. First operand 7068 states and 10253 transitions. Second operand 10 states. [2020-10-14 08:43:37,485 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:43:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:39,688 INFO L93 Difference]: Finished difference Result 17379 states and 25261 transitions. [2020-10-14 08:43:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:43:39,688 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-14 08:43:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:39,712 INFO L225 Difference]: With dead ends: 17379 [2020-10-14 08:43:39,712 INFO L226 Difference]: Without dead ends: 13979 [2020-10-14 08:43:39,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:43:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13979 states. [2020-10-14 08:43:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13979 to 7051. [2020-10-14 08:43:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7051 states. [2020-10-14 08:43:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 10224 transitions. [2020-10-14 08:43:40,577 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 10224 transitions. Word has length 74 [2020-10-14 08:43:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:40,578 INFO L479 AbstractCegarLoop]: Abstraction has 7051 states and 10224 transitions. [2020-10-14 08:43:40,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:43:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 10224 transitions. [2020-10-14 08:43:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:43:40,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:40,579 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] [2020-10-14 08:43:40,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:43:40,579 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1614152739, now seen corresponding path program 1 times [2020-10-14 08:43:40,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:40,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37360784] [2020-10-14 08:43:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:40,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:41,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:43,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:45,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:45,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:43:45,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:43:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:43:45,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:45,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:43:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:43:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:43:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:45,790 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 24 [2020-10-14 08:43:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:45,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:45,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:45,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:45,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:43:45,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:45,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:45,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:45,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37360784] [2020-10-14 08:43:45,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:45,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:43:45,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101723239] [2020-10-14 08:43:45,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:43:45,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:45,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:43:45,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:43:45,956 INFO L87 Difference]: Start difference. First operand 7051 states and 10224 transitions. Second operand 10 states. [2020-10-14 08:43:46,099 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-14 08:43:48,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:48,992 INFO L93 Difference]: Finished difference Result 20775 states and 30184 transitions. [2020-10-14 08:43:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 08:43:48,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-14 08:43:48,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:49,020 INFO L225 Difference]: With dead ends: 20775 [2020-10-14 08:43:49,020 INFO L226 Difference]: Without dead ends: 17391 [2020-10-14 08:43:49,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-14 08:43:49,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17391 states. [2020-10-14 08:43:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17391 to 7045. [2020-10-14 08:43:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7045 states. [2020-10-14 08:43:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 10206 transitions. [2020-10-14 08:43:50,085 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 10206 transitions. Word has length 74 [2020-10-14 08:43:50,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:50,085 INFO L479 AbstractCegarLoop]: Abstraction has 7045 states and 10206 transitions. [2020-10-14 08:43:50,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:43:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 10206 transitions. [2020-10-14 08:43:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 08:43:50,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:50,086 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] [2020-10-14 08:43:50,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:43:50,087 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:50,087 INFO L82 PathProgramCache]: Analyzing trace with hash 922307434, now seen corresponding path program 1 times [2020-10-14 08:43:50,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:50,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547456999] [2020-10-14 08:43:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:55,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:55,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 08:43:55,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:43:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:43:55,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:55,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:43:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:43:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 08:43:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:55,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:55,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:55,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:55,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:43:55,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:55,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:55,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547456999] [2020-10-14 08:43:55,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:55,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:43:55,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797491552] [2020-10-14 08:43:55,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:43:55,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:55,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:43:55,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:55,400 INFO L87 Difference]: Start difference. First operand 7045 states and 10206 transitions. Second operand 9 states. [2020-10-14 08:43:55,554 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 08:43:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:58,469 INFO L93 Difference]: Finished difference Result 21182 states and 30611 transitions. [2020-10-14 08:43:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:43:58,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-14 08:43:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:58,488 INFO L225 Difference]: With dead ends: 21182 [2020-10-14 08:43:58,489 INFO L226 Difference]: Without dead ends: 14275 [2020-10-14 08:43:58,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:43:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2020-10-14 08:43:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 7045. [2020-10-14 08:43:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7045 states. [2020-10-14 08:43:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 10200 transitions. [2020-10-14 08:43:59,575 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 10200 transitions. Word has length 75 [2020-10-14 08:43:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:59,575 INFO L479 AbstractCegarLoop]: Abstraction has 7045 states and 10200 transitions. [2020-10-14 08:43:59,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:43:59,575 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 10200 transitions. [2020-10-14 08:43:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 08:43:59,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:59,576 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] [2020-10-14 08:43:59,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:43:59,577 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:59,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:59,577 INFO L82 PathProgramCache]: Analyzing trace with hash 113522953, now seen corresponding path program 1 times [2020-10-14 08:43:59,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:59,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196132661] [2020-10-14 08:43:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:00,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:01,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:01,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 08:44:01,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:44:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2025 [2020-10-14 08:44:01,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:01,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:44:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:44:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 08:44:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:01,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:01,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:01,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:01,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:01,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:44:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:01,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196132661] [2020-10-14 08:44:01,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:01,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:44:01,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837918483] [2020-10-14 08:44:01,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:44:01,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:01,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:44:01,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:44:01,859 INFO L87 Difference]: Start difference. First operand 7045 states and 10200 transitions. Second operand 10 states. [2020-10-14 08:44:02,018 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-14 08:44:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:04,990 INFO L93 Difference]: Finished difference Result 19897 states and 28893 transitions. [2020-10-14 08:44:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:44:04,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-10-14 08:44:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:05,003 INFO L225 Difference]: With dead ends: 19897 [2020-10-14 08:44:05,004 INFO L226 Difference]: Without dead ends: 13928 [2020-10-14 08:44:05,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-14 08:44:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13928 states. [2020-10-14 08:44:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13928 to 7045. [2020-10-14 08:44:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7045 states. [2020-10-14 08:44:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 10199 transitions. [2020-10-14 08:44:06,144 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 10199 transitions. Word has length 76 [2020-10-14 08:44:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:06,144 INFO L479 AbstractCegarLoop]: Abstraction has 7045 states and 10199 transitions. [2020-10-14 08:44:06,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:44:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 10199 transitions. [2020-10-14 08:44:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 08:44:06,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:06,146 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] [2020-10-14 08:44:06,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:44:06,146 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash -253529144, now seen corresponding path program 1 times [2020-10-14 08:44:06,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:06,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520443862] [2020-10-14 08:44:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:07,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:11,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4968 [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:44:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:11,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:11,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:11,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:11,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:11,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:11,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:44:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:11,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520443862] [2020-10-14 08:44:11,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:11,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:44:11,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711379784] [2020-10-14 08:44:11,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:44:11,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:11,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:44:11,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:44:11,360 INFO L87 Difference]: Start difference. First operand 7045 states and 10199 transitions. Second operand 11 states. [2020-10-14 08:44:11,533 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-14 08:44:14,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:14,233 INFO L93 Difference]: Finished difference Result 18332 states and 26638 transitions. [2020-10-14 08:44:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:44:14,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-14 08:44:14,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:14,245 INFO L225 Difference]: With dead ends: 18332 [2020-10-14 08:44:14,245 INFO L226 Difference]: Without dead ends: 11410 [2020-10-14 08:44:14,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:44:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11410 states. [2020-10-14 08:44:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11410 to 7045. [2020-10-14 08:44:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7045 states. [2020-10-14 08:44:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 10196 transitions. [2020-10-14 08:44:15,530 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 10196 transitions. Word has length 76 [2020-10-14 08:44:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:15,530 INFO L479 AbstractCegarLoop]: Abstraction has 7045 states and 10196 transitions. [2020-10-14 08:44:15,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:44:15,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 10196 transitions. [2020-10-14 08:44:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 08:44:15,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:15,531 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] [2020-10-14 08:44:15,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:44:15,532 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:15,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2098063043, now seen corresponding path program 1 times [2020-10-14 08:44:15,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:15,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256660156] [2020-10-14 08:44:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:15,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:18,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:18,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 08:44:18,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:44:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-10-14 08:44:18,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:18,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:44:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:44:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 08:44:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:18,774 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 25 [2020-10-14 08:44:18,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:44:18,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:18,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:18,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256660156] [2020-10-14 08:44:18,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:18,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:44:18,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436222103] [2020-10-14 08:44:18,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:44:18,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:18,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:44:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:44:18,945 INFO L87 Difference]: Start difference. First operand 7045 states and 10196 transitions. Second operand 10 states. [2020-10-14 08:44:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:22,195 INFO L93 Difference]: Finished difference Result 13930 states and 20212 transitions. [2020-10-14 08:44:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:44:22,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-10-14 08:44:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:22,207 INFO L225 Difference]: With dead ends: 13930 [2020-10-14 08:44:22,207 INFO L226 Difference]: Without dead ends: 10503 [2020-10-14 08:44:22,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:44:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10503 states. [2020-10-14 08:44:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10503 to 6994. [2020-10-14 08:44:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6994 states. [2020-10-14 08:44:23,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 10133 transitions. [2020-10-14 08:44:23,596 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 10133 transitions. Word has length 76 [2020-10-14 08:44:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:23,597 INFO L479 AbstractCegarLoop]: Abstraction has 6994 states and 10133 transitions. [2020-10-14 08:44:23,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:44:23,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 10133 transitions. [2020-10-14 08:44:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 08:44:23,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:23,598 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 08:44:23,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:44:23,598 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1799415073, now seen corresponding path program 1 times [2020-10-14 08:44:23,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:23,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648496686] [2020-10-14 08:44:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:24,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:24,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 08:44:24,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:44:24,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-14 08:44:24,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:24,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:44:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:44:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 08:44:24,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:25,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:25,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:25,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:25,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:25,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:44:25,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:25,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:25,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648496686] [2020-10-14 08:44:25,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:25,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:44:25,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853416690] [2020-10-14 08:44:25,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:44:25,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:25,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:44:25,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:44:25,176 INFO L87 Difference]: Start difference. First operand 6994 states and 10133 transitions. Second operand 9 states. [2020-10-14 08:44:25,310 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-14 08:44:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:28,883 INFO L93 Difference]: Finished difference Result 15471 states and 22478 transitions. [2020-10-14 08:44:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:44:28,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-14 08:44:28,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:28,896 INFO L225 Difference]: With dead ends: 15471 [2020-10-14 08:44:28,896 INFO L226 Difference]: Without dead ends: 13677 [2020-10-14 08:44:28,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:44:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13677 states. [2020-10-14 08:44:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13677 to 6887. [2020-10-14 08:44:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6887 states. [2020-10-14 08:44:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 9983 transitions. [2020-10-14 08:44:30,347 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 9983 transitions. Word has length 77 [2020-10-14 08:44:30,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:30,347 INFO L479 AbstractCegarLoop]: Abstraction has 6887 states and 9983 transitions. [2020-10-14 08:44:30,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:44:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 9983 transitions. [2020-10-14 08:44:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:44:30,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:30,351 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 08:44:30,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:44:30,352 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:30,352 INFO L82 PathProgramCache]: Analyzing trace with hash 70797982, now seen corresponding path program 1 times [2020-10-14 08:44:30,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:30,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279448955] [2020-10-14 08:44:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:35,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:35,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:44:35,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:44:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:44:35,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:35,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 08:44:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:44:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:35,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:35,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:35,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:35,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:35,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:35,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:35,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279448955] [2020-10-14 08:44:35,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:35,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:44:35,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268090480] [2020-10-14 08:44:35,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:44:35,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:35,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:44:35,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:44:35,563 INFO L87 Difference]: Start difference. First operand 6887 states and 9983 transitions. Second operand 4 states. [2020-10-14 08:44:35,690 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-14 08:44:39,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:39,124 INFO L93 Difference]: Finished difference Result 19851 states and 28665 transitions. [2020-10-14 08:44:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:44:39,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 08:44:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:39,137 INFO L225 Difference]: With dead ends: 19851 [2020-10-14 08:44:39,137 INFO L226 Difference]: Without dead ends: 13065 [2020-10-14 08:44:39,144 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 08:44:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13065 states. [2020-10-14 08:44:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13065 to 12531. [2020-10-14 08:44:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12531 states. [2020-10-14 08:44:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 17955 transitions. [2020-10-14 08:44:41,845 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 17955 transitions. Word has length 101 [2020-10-14 08:44:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:41,846 INFO L479 AbstractCegarLoop]: Abstraction has 12531 states and 17955 transitions. [2020-10-14 08:44:41,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:44:41,846 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 17955 transitions. [2020-10-14 08:44:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:44:41,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:41,848 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 08:44:41,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:44:41,848 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:41,848 INFO L82 PathProgramCache]: Analyzing trace with hash 152729128, now seen corresponding path program 1 times [2020-10-14 08:44:41,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:41,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194676122] [2020-10-14 08:44:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:41,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:42,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:46,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:46,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:44:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:44:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 08:44:46,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:46,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 08:44:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:44:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:47,081 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:44:47,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:47,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:47,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:47,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:47,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:47,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:47,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:47,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194676122] [2020-10-14 08:44:47,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:47,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:44:47,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956203569] [2020-10-14 08:44:47,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:44:47,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:47,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:44:47,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:44:47,124 INFO L87 Difference]: Start difference. First operand 12531 states and 17955 transitions. Second operand 4 states. [2020-10-14 08:44:47,250 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-14 08:44:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:52,833 INFO L93 Difference]: Finished difference Result 36175 states and 51517 transitions. [2020-10-14 08:44:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:44:52,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-14 08:44:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:52,857 INFO L225 Difference]: With dead ends: 36175 [2020-10-14 08:44:52,858 INFO L226 Difference]: Without dead ends: 23745 [2020-10-14 08:44:52,873 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 08:44:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23745 states. [2020-10-14 08:44:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23745 to 22527. [2020-10-14 08:44:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22527 states. [2020-10-14 08:44:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22527 states to 22527 states and 31847 transitions. [2020-10-14 08:44:58,536 INFO L78 Accepts]: Start accepts. Automaton has 22527 states and 31847 transitions. Word has length 102 [2020-10-14 08:44:58,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:58,536 INFO L479 AbstractCegarLoop]: Abstraction has 22527 states and 31847 transitions. [2020-10-14 08:44:58,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:44:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 22527 states and 31847 transitions. [2020-10-14 08:44:58,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:44:58,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:58,538 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 08:44:58,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:44:58,538 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:58,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:58,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2015256714, now seen corresponding path program 1 times [2020-10-14 08:44:58,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:58,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831813055] [2020-10-14 08:44:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:02,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:02,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:03,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:03,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:45:03,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:45:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 08:45:03,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:03,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 08:45:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:45:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:03,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:03,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:03,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:45:03,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:03,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:03,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831813055] [2020-10-14 08:45:03,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:03,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:45:03,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035530535] [2020-10-14 08:45:03,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:45:03,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:03,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:45:03,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:45:03,766 INFO L87 Difference]: Start difference. First operand 22527 states and 31847 transitions. Second operand 4 states. [2020-10-14 08:45:03,892 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-14 08:45:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:11,517 INFO L93 Difference]: Finished difference Result 49439 states and 70087 transitions. [2020-10-14 08:45:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:45:11,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:45:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:11,547 INFO L225 Difference]: With dead ends: 49439 [2020-10-14 08:45:11,548 INFO L226 Difference]: Without dead ends: 32621 [2020-10-14 08:45:11,568 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 08:45:11,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32621 states. [2020-10-14 08:45:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32621 to 30875. [2020-10-14 08:45:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30875 states. [2020-10-14 08:45:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30875 states to 30875 states and 43283 transitions. [2020-10-14 08:45:18,505 INFO L78 Accepts]: Start accepts. Automaton has 30875 states and 43283 transitions. Word has length 103 [2020-10-14 08:45:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:18,505 INFO L479 AbstractCegarLoop]: Abstraction has 30875 states and 43283 transitions. [2020-10-14 08:45:18,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:45:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30875 states and 43283 transitions. [2020-10-14 08:45:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:45:18,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:18,506 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 08:45:18,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 08:45:18,507 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:18,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1666679417, now seen corresponding path program 1 times [2020-10-14 08:45:18,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:18,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542398276] [2020-10-14 08:45:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:23,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:23,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:45:23,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:45:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:45:23,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:23,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 08:45:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 08:45:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:23,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:23,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:23,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:23,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:45:23,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:23,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:23,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:23,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542398276] [2020-10-14 08:45:23,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:23,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:45:23,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051393521] [2020-10-14 08:45:23,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:45:23,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:23,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:45:23,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:45:23,682 INFO L87 Difference]: Start difference. First operand 30875 states and 43283 transitions. Second operand 4 states. [2020-10-14 08:45:23,824 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-14 08:45:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:38,460 INFO L93 Difference]: Finished difference Result 89023 states and 123733 transitions. [2020-10-14 08:45:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:45:38,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-14 08:45:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:38,518 INFO L225 Difference]: With dead ends: 89023 [2020-10-14 08:45:38,518 INFO L226 Difference]: Without dead ends: 58285 [2020-10-14 08:45:38,545 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 08:45:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58285 states. [2020-10-14 08:45:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58285 to 54955. [2020-10-14 08:45:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54955 states. [2020-10-14 08:45:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54955 states to 54955 states and 75603 transitions. [2020-10-14 08:45:51,201 INFO L78 Accepts]: Start accepts. Automaton has 54955 states and 75603 transitions. Word has length 105 [2020-10-14 08:45:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:51,201 INFO L479 AbstractCegarLoop]: Abstraction has 54955 states and 75603 transitions. [2020-10-14 08:45:51,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:45:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand 54955 states and 75603 transitions. [2020-10-14 08:45:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 08:45:51,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:51,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 08:45:51,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 08:45:51,211 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:51,212 INFO L82 PathProgramCache]: Analyzing trace with hash -614955992, now seen corresponding path program 1 times [2020-10-14 08:45:51,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:51,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887762883] [2020-10-14 08:45:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:51,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking...