/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_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:24:51,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:24:51,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:24:51,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:24:51,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:24:51,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:24:51,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:24:51,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:24:51,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:24:51,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:24:51,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:24:51,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:24:51,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:24:51,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:24:51,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:24:51,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:24:51,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:24:51,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:24:51,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:24:51,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:24:51,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:24:51,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:24:51,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:24:51,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:24:51,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:24:51,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:24:51,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:24:51,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:24:51,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:24:51,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:24:51,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:24:51,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:24:51,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:24:51,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:24:51,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:24:51,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:24:51,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:24:51,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:24:51,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:24:51,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:24:51,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:24:51,804 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 09:24:51,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:24:51,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:24:51,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:24:51,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:24:51,862 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:24:51,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:24:51,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:24:51,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:24:51,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:24:51,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:24:51,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:24:51,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:24:51,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:24:51,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:24:51,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:24:51,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:24:51,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:24:51,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:24:51,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:24:51,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:24:51,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:24:51,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:24:51,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:24:51,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:24:51,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:24:51,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:24:51,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:24:51,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:24:51,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:24:51,869 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 09:24:52,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:24:52,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:24:52,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:24:52,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:24:52,185 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:24:52,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:24:52,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e7c97399/4e62283aff3a4bb2a2e4d70f890d01d7/FLAG269483c22 [2020-10-14 09:24:52,813 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:24:52,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:24:52,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e7c97399/4e62283aff3a4bb2a2e4d70f890d01d7/FLAG269483c22 [2020-10-14 09:24:53,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e7c97399/4e62283aff3a4bb2a2e4d70f890d01d7 [2020-10-14 09:24:53,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:24:53,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:24:53,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:24:53,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:24:53,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:24:53,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:53,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d9d4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53, skipping insertion in model container [2020-10-14 09:24:53,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:53,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:24:53,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:24:53,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:24:53,571 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:24:53,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:24:53,847 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:24:53,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53 WrapperNode [2020-10-14 09:24:53,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:24:53,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:24:53,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:24:53,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:24:53,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:53,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:53,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:53,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:53,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:53,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:53,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (1/1) ... [2020-10-14 09:24:54,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:24:54,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:24:54,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:24:54,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:24:54,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:24:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:24:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:24:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:24:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:24:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:24:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:24:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:24:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:24:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:24:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:24:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:24:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:24:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:24:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:24:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:24:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:24:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:24:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:24:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:24:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:24:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:24:55,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:24:55,430 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:24:55,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:24:55 BoogieIcfgContainer [2020-10-14 09:24:55,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:24:55,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:24:55,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:24:55,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:24:55,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:24:53" (1/3) ... [2020-10-14 09:24:55,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7635a92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:24:55, skipping insertion in model container [2020-10-14 09:24:55,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:24:53" (2/3) ... [2020-10-14 09:24:55,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7635a92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:24:55, skipping insertion in model container [2020-10-14 09:24:55,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:24:55" (3/3) ... [2020-10-14 09:24:55,450 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:24:55,461 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:24:55,469 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 09:24:55,483 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 09:24:55,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:24:55,511 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:24:55,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:24:55,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:24:55,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:24:55,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:24:55,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:24:55,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:24:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states. [2020-10-14 09:24:55,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 09:24:55,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:24:55,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:24:55,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:24:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:24:55,559 INFO L82 PathProgramCache]: Analyzing trace with hash 538953665, now seen corresponding path program 1 times [2020-10-14 09:24:55,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:24:55,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940371466] [2020-10-14 09:24:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:24:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:24:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:56,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:01,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:01,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 09:25:01,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:25:01,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 09:25:01,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:01,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:25:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:25:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 09:25:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:25:01,519 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:25:01,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:01,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:01,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:01,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:01,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:25:01,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:01,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:25:01,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940371466] [2020-10-14 09:25:01,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:01,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:25:01,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675605530] [2020-10-14 09:25:01,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:25:01,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:01,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:25:01,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:25:01,631 INFO L87 Difference]: Start difference. First operand 275 states. Second operand 5 states. [2020-10-14 09:25:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:04,977 INFO L93 Difference]: Finished difference Result 696 states and 1218 transitions. [2020-10-14 09:25:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:25:04,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 09:25:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:05,012 INFO L225 Difference]: With dead ends: 696 [2020-10-14 09:25:05,013 INFO L226 Difference]: Without dead ends: 512 [2020-10-14 09:25:05,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:25:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-14 09:25:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2020-10-14 09:25:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-14 09:25:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 707 transitions. [2020-10-14 09:25:05,147 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 707 transitions. Word has length 102 [2020-10-14 09:25:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:05,148 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 707 transitions. [2020-10-14 09:25:05,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:25:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 707 transitions. [2020-10-14 09:25:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:25:05,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:05,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:25:05,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:25:05,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:05,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:05,159 INFO L82 PathProgramCache]: Analyzing trace with hash -660772205, now seen corresponding path program 1 times [2020-10-14 09:25:05,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:05,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043923013] [2020-10-14 09:25:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:05,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:05,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:05,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:08,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:10,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:10,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:25:10,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:25:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:25:10,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:10,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:25:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 09:25:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:25:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 09:25:10,449 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:25:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:10,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:10,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:25:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:10,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:25:10,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043923013] [2020-10-14 09:25:10,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:10,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:25:10,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893158232] [2020-10-14 09:25:10,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:25:10,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:10,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:25:10,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:25:10,493 INFO L87 Difference]: Start difference. First operand 485 states and 707 transitions. Second operand 4 states. [2020-10-14 09:25:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:11,898 INFO L93 Difference]: Finished difference Result 1379 states and 1995 transitions. [2020-10-14 09:25:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:25:11,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 09:25:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:11,909 INFO L225 Difference]: With dead ends: 1379 [2020-10-14 09:25:11,910 INFO L226 Difference]: Without dead ends: 934 [2020-10-14 09:25:11,915 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 09:25:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-10-14 09:25:11,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 489. [2020-10-14 09:25:11,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-14 09:25:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 711 transitions. [2020-10-14 09:25:11,950 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 711 transitions. Word has length 103 [2020-10-14 09:25:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:11,950 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 711 transitions. [2020-10-14 09:25:11,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:25:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 711 transitions. [2020-10-14 09:25:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:25:11,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:11,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:25:11,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:25:11,953 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:11,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1666564350, now seen corresponding path program 1 times [2020-10-14 09:25:11,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:11,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573273260] [2020-10-14 09:25:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:12,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:12,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:17,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:17,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:25:17,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:25:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:25:17,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:17,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:17,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:25:17,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:25:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 09:25:17,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:17,371 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:25:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:17,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:17,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:25:17,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:17,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:17,424 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 09:25:17,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573273260] [2020-10-14 09:25:17,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:17,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:25:17,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991446537] [2020-10-14 09:25:17,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:25:17,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:17,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:25:17,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:25:17,428 INFO L87 Difference]: Start difference. First operand 489 states and 711 transitions. Second operand 5 states. [2020-10-14 09:25:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:19,208 INFO L93 Difference]: Finished difference Result 1420 states and 2060 transitions. [2020-10-14 09:25:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:25:19,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 09:25:19,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:19,216 INFO L225 Difference]: With dead ends: 1420 [2020-10-14 09:25:19,216 INFO L226 Difference]: Without dead ends: 942 [2020-10-14 09:25:19,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:25:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2020-10-14 09:25:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 927. [2020-10-14 09:25:19,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-10-14 09:25:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1337 transitions. [2020-10-14 09:25:19,279 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1337 transitions. Word has length 104 [2020-10-14 09:25:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:19,280 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1337 transitions. [2020-10-14 09:25:19,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:25:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1337 transitions. [2020-10-14 09:25:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 09:25:19,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:19,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:25:19,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:25:19,286 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:19,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1090650991, now seen corresponding path program 1 times [2020-10-14 09:25:19,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:19,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714537901] [2020-10-14 09:25:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:19,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:19,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:24,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:24,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 09:25:24,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:25:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:25:24,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:24,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:25:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:25:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:25:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:25:24,605 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:25:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:24,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:24,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:24,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:24,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:25:24,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:24,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:24,658 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 09:25:24,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714537901] [2020-10-14 09:25:24,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:24,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:25:24,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144580441] [2020-10-14 09:25:24,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:25:24,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:24,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:25:24,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:25:24,662 INFO L87 Difference]: Start difference. First operand 927 states and 1337 transitions. Second operand 4 states. [2020-10-14 09:25:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:26,068 INFO L93 Difference]: Finished difference Result 2742 states and 3955 transitions. [2020-10-14 09:25:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:25:26,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-14 09:25:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:26,079 INFO L225 Difference]: With dead ends: 2742 [2020-10-14 09:25:26,079 INFO L226 Difference]: Without dead ends: 1842 [2020-10-14 09:25:26,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:25:26,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2020-10-14 09:25:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 930. [2020-10-14 09:25:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-10-14 09:25:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1341 transitions. [2020-10-14 09:25:26,166 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1341 transitions. Word has length 105 [2020-10-14 09:25:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:26,166 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1341 transitions. [2020-10-14 09:25:26,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:25:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1341 transitions. [2020-10-14 09:25:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 09:25:26,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:26,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:25:26,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:25:26,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:26,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:26,171 INFO L82 PathProgramCache]: Analyzing trace with hash -762482293, now seen corresponding path program 1 times [2020-10-14 09:25:26,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:26,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063751188] [2020-10-14 09:25:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:31,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:31,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 09:25:31,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:25:31,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:25:31,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:31,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:31,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:25:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 09:25:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 09:25:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:25:31,421 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:25:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:31,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:31,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:31,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:31,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:25:31,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:31,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:31,470 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 09:25:31,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063751188] [2020-10-14 09:25:31,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:31,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:25:31,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56318736] [2020-10-14 09:25:31,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:25:31,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:31,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:25:31,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:25:31,473 INFO L87 Difference]: Start difference. First operand 930 states and 1341 transitions. Second operand 4 states. [2020-10-14 09:25:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:32,979 INFO L93 Difference]: Finished difference Result 1934 states and 2906 transitions. [2020-10-14 09:25:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:25:32,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-14 09:25:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:32,990 INFO L225 Difference]: With dead ends: 1934 [2020-10-14 09:25:32,990 INFO L226 Difference]: Without dead ends: 1244 [2020-10-14 09:25:32,992 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 09:25:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2020-10-14 09:25:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1216. [2020-10-14 09:25:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-14 09:25:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1811 transitions. [2020-10-14 09:25:33,074 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1811 transitions. Word has length 106 [2020-10-14 09:25:33,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:33,075 INFO L479 AbstractCegarLoop]: Abstraction has 1216 states and 1811 transitions. [2020-10-14 09:25:33,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:25:33,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1811 transitions. [2020-10-14 09:25:33,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 09:25:33,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:33,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:25:33,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:25:33,081 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:33,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:33,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1835578015, now seen corresponding path program 1 times [2020-10-14 09:25:33,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:33,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229658642] [2020-10-14 09:25:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:35,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:38,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:38,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 09:25:38,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:25:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:25:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:38,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:25:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:25:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:25:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:25:38,341 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:25:38,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:38,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:38,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:38,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:25:38,388 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 09:25:38,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229658642] [2020-10-14 09:25:38,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:38,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:25:38,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219649985] [2020-10-14 09:25:38,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:25:38,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:38,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:25:38,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:25:38,390 INFO L87 Difference]: Start difference. First operand 1216 states and 1811 transitions. Second operand 4 states. [2020-10-14 09:25:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:40,401 INFO L93 Difference]: Finished difference Result 3231 states and 4858 transitions. [2020-10-14 09:25:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:25:40,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-14 09:25:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:40,415 INFO L225 Difference]: With dead ends: 3231 [2020-10-14 09:25:40,415 INFO L226 Difference]: Without dead ends: 2329 [2020-10-14 09:25:40,417 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 09:25:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2020-10-14 09:25:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2316. [2020-10-14 09:25:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2316 states. [2020-10-14 09:25:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3420 transitions. [2020-10-14 09:25:40,556 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3420 transitions. Word has length 106 [2020-10-14 09:25:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:40,557 INFO L479 AbstractCegarLoop]: Abstraction has 2316 states and 3420 transitions. [2020-10-14 09:25:40,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:25:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3420 transitions. [2020-10-14 09:25:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 09:25:40,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:40,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:25:40,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:25:40,563 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash 874292478, now seen corresponding path program 1 times [2020-10-14 09:25:40,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:40,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024387650] [2020-10-14 09:25:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:41,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:45,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:45,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:45,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 09:25:45,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:25:45,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:25:45,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:45,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:25:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:25:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 09:25:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:25:45,877 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:25:45,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:45,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:45,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:45,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:45,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:25:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:45,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:25:45,925 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 09:25:45,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024387650] [2020-10-14 09:25:45,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:45,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:25:45,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175788812] [2020-10-14 09:25:45,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:25:45,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:45,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:25:45,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:25:45,928 INFO L87 Difference]: Start difference. First operand 2316 states and 3420 transitions. Second operand 5 states. [2020-10-14 09:25:48,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:48,233 INFO L93 Difference]: Finished difference Result 6018 states and 8934 transitions. [2020-10-14 09:25:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:25:48,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 09:25:48,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:48,252 INFO L225 Difference]: With dead ends: 6018 [2020-10-14 09:25:48,252 INFO L226 Difference]: Without dead ends: 3992 [2020-10-14 09:25:48,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:25:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2020-10-14 09:25:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3946. [2020-10-14 09:25:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3946 states. [2020-10-14 09:25:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 5778 transitions. [2020-10-14 09:25:48,574 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 5778 transitions. Word has length 106 [2020-10-14 09:25:48,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:48,575 INFO L479 AbstractCegarLoop]: Abstraction has 3946 states and 5778 transitions. [2020-10-14 09:25:48,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:25:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 5778 transitions. [2020-10-14 09:25:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 09:25:48,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:48,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:25:48,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:25:48,581 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:48,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1989392253, now seen corresponding path program 1 times [2020-10-14 09:25:48,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:48,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51940268] [2020-10-14 09:25:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:53,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:53,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 09:25:53,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:25:53,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:25:53,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:53,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:25:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:25:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 09:25:53,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:25:53,868 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:25:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:25:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:53,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:25:53,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:25:53,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:25:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:25:53,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:25:53,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:25:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:25:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:25:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:25:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:25:53,912 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 09:25:53,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51940268] [2020-10-14 09:25:53,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:25:53,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:25:53,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55411735] [2020-10-14 09:25:53,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:25:53,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:25:53,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:25:53,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:25:53,914 INFO L87 Difference]: Start difference. First operand 3946 states and 5778 transitions. Second operand 5 states. [2020-10-14 09:25:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:56,054 INFO L93 Difference]: Finished difference Result 11322 states and 16545 transitions. [2020-10-14 09:25:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:25:56,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 09:25:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:56,088 INFO L225 Difference]: With dead ends: 11322 [2020-10-14 09:25:56,088 INFO L226 Difference]: Without dead ends: 7496 [2020-10-14 09:25:56,098 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 09:25:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2020-10-14 09:25:56,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 7422. [2020-10-14 09:25:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7422 states. [2020-10-14 09:25:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7422 states to 7422 states and 10773 transitions. [2020-10-14 09:25:56,612 INFO L78 Accepts]: Start accepts. Automaton has 7422 states and 10773 transitions. Word has length 106 [2020-10-14 09:25:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:25:56,613 INFO L479 AbstractCegarLoop]: Abstraction has 7422 states and 10773 transitions. [2020-10-14 09:25:56,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:25:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7422 states and 10773 transitions. [2020-10-14 09:25:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 09:25:56,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:25:56,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:25:56,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:25:56,622 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:25:56,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:25:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash -612237519, now seen corresponding path program 1 times [2020-10-14 09:25:56,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:25:56,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029298688] [2020-10-14 09:25:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:25:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:25:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:56,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:25:56,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:01,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 09:26:01,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:26:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:26:01,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:01,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 09:26:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:26:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:01,843 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:26:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:01,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:01,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:01,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:26:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:01,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:01,871 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 09:26:01,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029298688] [2020-10-14 09:26:01,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:01,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:01,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597331919] [2020-10-14 09:26:01,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:01,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:01,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:01,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:01,873 INFO L87 Difference]: Start difference. First operand 7422 states and 10773 transitions. Second operand 4 states. [2020-10-14 09:26:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:04,512 INFO L93 Difference]: Finished difference Result 21753 states and 31626 transitions. [2020-10-14 09:26:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:26:04,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-10-14 09:26:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:04,560 INFO L225 Difference]: With dead ends: 21753 [2020-10-14 09:26:04,561 INFO L226 Difference]: Without dead ends: 14630 [2020-10-14 09:26:04,576 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 09:26:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14630 states. [2020-10-14 09:26:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14630 to 7432. [2020-10-14 09:26:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7432 states. [2020-10-14 09:26:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 10783 transitions. [2020-10-14 09:26:05,039 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 10783 transitions. Word has length 107 [2020-10-14 09:26:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:05,039 INFO L479 AbstractCegarLoop]: Abstraction has 7432 states and 10783 transitions. [2020-10-14 09:26:05,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 10783 transitions. [2020-10-14 09:26:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 09:26:05,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:05,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:05,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:26:05,052 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1504954956, now seen corresponding path program 1 times [2020-10-14 09:26:05,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:05,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878958644] [2020-10-14 09:26:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:10,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:10,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 09:26:10,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:26:10,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:26:10,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:10,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:26:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:26:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:10,293 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:26:10,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:10,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:10,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:10,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:10,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:26:10,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:10,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:10,318 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 09:26:10,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878958644] [2020-10-14 09:26:10,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:10,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:10,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583331709] [2020-10-14 09:26:10,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:10,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:10,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:10,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:10,321 INFO L87 Difference]: Start difference. First operand 7432 states and 10783 transitions. Second operand 4 states. [2020-10-14 09:26:12,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:12,274 INFO L93 Difference]: Finished difference Result 16636 states and 25134 transitions. [2020-10-14 09:26:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:26:12,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-10-14 09:26:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:12,310 INFO L225 Difference]: With dead ends: 16636 [2020-10-14 09:26:12,311 INFO L226 Difference]: Without dead ends: 11002 [2020-10-14 09:26:12,325 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 09:26:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2020-10-14 09:26:13,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 10660. [2020-10-14 09:26:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10660 states. [2020-10-14 09:26:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 15975 transitions. [2020-10-14 09:26:13,250 INFO L78 Accepts]: Start accepts. Automaton has 10660 states and 15975 transitions. Word has length 108 [2020-10-14 09:26:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:13,251 INFO L479 AbstractCegarLoop]: Abstraction has 10660 states and 15975 transitions. [2020-10-14 09:26:13,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states and 15975 transitions. [2020-10-14 09:26:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 09:26:13,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:13,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:13,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:26:13,259 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:13,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:13,260 INFO L82 PathProgramCache]: Analyzing trace with hash -299586063, now seen corresponding path program 1 times [2020-10-14 09:26:13,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:13,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372009673] [2020-10-14 09:26:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:13,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:13,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:18,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:18,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 09:26:18,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:26:18,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:26:18,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:18,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:26:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 09:26:18,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:18,542 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:26:18,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:18,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:18,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:26:18,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:18,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:18,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:18,572 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 09:26:18,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372009673] [2020-10-14 09:26:18,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:18,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:18,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611448166] [2020-10-14 09:26:18,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:18,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:18,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:18,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:18,574 INFO L87 Difference]: Start difference. First operand 10660 states and 15975 transitions. Second operand 5 states. [2020-10-14 09:26:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:21,235 INFO L93 Difference]: Finished difference Result 19985 states and 30238 transitions. [2020-10-14 09:26:21,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:21,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 09:26:21,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:21,261 INFO L225 Difference]: With dead ends: 19985 [2020-10-14 09:26:21,261 INFO L226 Difference]: Without dead ends: 11561 [2020-10-14 09:26:21,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:26:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11561 states. [2020-10-14 09:26:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11561 to 11156. [2020-10-14 09:26:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11156 states. [2020-10-14 09:26:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11156 states to 11156 states and 16540 transitions. [2020-10-14 09:26:22,300 INFO L78 Accepts]: Start accepts. Automaton has 11156 states and 16540 transitions. Word has length 108 [2020-10-14 09:26:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:22,301 INFO L479 AbstractCegarLoop]: Abstraction has 11156 states and 16540 transitions. [2020-10-14 09:26:22,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 11156 states and 16540 transitions. [2020-10-14 09:26:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 09:26:22,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:22,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:22,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:26:22,308 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:22,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:22,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1454544516, now seen corresponding path program 1 times [2020-10-14 09:26:22,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:22,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722628482] [2020-10-14 09:26:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:22,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:22,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:22,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:22,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:27,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:27,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 09:26:27,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:26:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:26:27,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:27,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:26:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:26:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:27,592 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:26:27,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:26:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:27,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:27,624 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 09:26:27,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722628482] [2020-10-14 09:26:27,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:27,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:27,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320036059] [2020-10-14 09:26:27,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:27,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:27,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:27,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:27,626 INFO L87 Difference]: Start difference. First operand 11156 states and 16540 transitions. Second operand 5 states. [2020-10-14 09:26:29,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:29,430 INFO L93 Difference]: Finished difference Result 20243 states and 30106 transitions. [2020-10-14 09:26:29,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:29,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 09:26:29,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:29,444 INFO L225 Difference]: With dead ends: 20243 [2020-10-14 09:26:29,445 INFO L226 Difference]: Without dead ends: 9220 [2020-10-14 09:26:29,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:26:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9220 states. [2020-10-14 09:26:30,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9220 to 9220. [2020-10-14 09:26:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9220 states. [2020-10-14 09:26:30,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9220 states to 9220 states and 13727 transitions. [2020-10-14 09:26:30,465 INFO L78 Accepts]: Start accepts. Automaton has 9220 states and 13727 transitions. Word has length 108 [2020-10-14 09:26:30,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:30,465 INFO L479 AbstractCegarLoop]: Abstraction has 9220 states and 13727 transitions. [2020-10-14 09:26:30,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:30,465 INFO L276 IsEmpty]: Start isEmpty. Operand 9220 states and 13727 transitions. [2020-10-14 09:26:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:26:30,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:30,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:30,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:26:30,471 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:30,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:30,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1505957785, now seen corresponding path program 1 times [2020-10-14 09:26:30,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:30,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095481194] [2020-10-14 09:26:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:30,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:30,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:35,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:35,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:26:35,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:26:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:26:35,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:35,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:26:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:26:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:26:35,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:35,757 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:26:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:35,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:35,786 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 09:26:35,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095481194] [2020-10-14 09:26:35,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:35,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:26:35,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286969400] [2020-10-14 09:26:35,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:26:35,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:26:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:26:35,788 INFO L87 Difference]: Start difference. First operand 9220 states and 13727 transitions. Second operand 5 states. [2020-10-14 09:26:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:37,484 INFO L93 Difference]: Finished difference Result 13770 states and 20530 transitions. [2020-10-14 09:26:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:26:37,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-14 09:26:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:37,493 INFO L225 Difference]: With dead ends: 13770 [2020-10-14 09:26:37,493 INFO L226 Difference]: Without dead ends: 7773 [2020-10-14 09:26:37,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:26:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7773 states. [2020-10-14 09:26:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7773 to 7773. [2020-10-14 09:26:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7773 states. [2020-10-14 09:26:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 11555 transitions. [2020-10-14 09:26:38,065 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 11555 transitions. Word has length 113 [2020-10-14 09:26:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:38,065 INFO L479 AbstractCegarLoop]: Abstraction has 7773 states and 11555 transitions. [2020-10-14 09:26:38,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:26:38,065 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 11555 transitions. [2020-10-14 09:26:38,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:26:38,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:38,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:38,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:26:38,069 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:38,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1877491556, now seen corresponding path program 1 times [2020-10-14 09:26:38,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:38,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064676496] [2020-10-14 09:26:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:38,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:39,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:43,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:43,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:26:43,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:26:43,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:26:43,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:43,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:43,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 09:26:43,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 09:26:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:43,841 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:26:43,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:43,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:43,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:43,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:43,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:43,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:26:43,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:43,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:43,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:43,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:43,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064676496] [2020-10-14 09:26:43,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:43,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:43,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127588355] [2020-10-14 09:26:43,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:43,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:43,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:43,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:43,879 INFO L87 Difference]: Start difference. First operand 7773 states and 11555 transitions. Second operand 4 states. [2020-10-14 09:26:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:46,609 INFO L93 Difference]: Finished difference Result 17179 states and 25953 transitions. [2020-10-14 09:26:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:26:46,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-14 09:26:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:46,625 INFO L225 Difference]: With dead ends: 17179 [2020-10-14 09:26:46,625 INFO L226 Difference]: Without dead ends: 11072 [2020-10-14 09:26:46,634 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 09:26:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11072 states. [2020-10-14 09:26:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11072 to 11039. [2020-10-14 09:26:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11039 states. [2020-10-14 09:26:47,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11039 states to 11039 states and 16212 transitions. [2020-10-14 09:26:47,299 INFO L78 Accepts]: Start accepts. Automaton has 11039 states and 16212 transitions. Word has length 113 [2020-10-14 09:26:47,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:47,300 INFO L479 AbstractCegarLoop]: Abstraction has 11039 states and 16212 transitions. [2020-10-14 09:26:47,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:47,300 INFO L276 IsEmpty]: Start isEmpty. Operand 11039 states and 16212 transitions. [2020-10-14 09:26:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 09:26:47,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:47,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:47,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:26:47,305 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:47,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:47,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1769919536, now seen corresponding path program 1 times [2020-10-14 09:26:47,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:47,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739713043] [2020-10-14 09:26:47,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:47,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:52,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:52,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 09:26:52,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:26:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:26:52,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:52,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:26:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 09:26:52,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:26:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:52,550 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:26:52,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:26:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:52,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:26:52,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:26:52,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:26:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:26:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:26:52,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:26:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:26:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:26:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:26:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:26:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:26:52,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739713043] [2020-10-14 09:26:52,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:26:52,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:26:52,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985866092] [2020-10-14 09:26:52,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:26:52,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:26:52,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:26:52,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:26:52,576 INFO L87 Difference]: Start difference. First operand 11039 states and 16212 transitions. Second operand 4 states. [2020-10-14 09:26:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:26:55,260 INFO L93 Difference]: Finished difference Result 24387 states and 36817 transitions. [2020-10-14 09:26:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:26:55,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-14 09:26:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:26:55,281 INFO L225 Difference]: With dead ends: 24387 [2020-10-14 09:26:55,282 INFO L226 Difference]: Without dead ends: 16556 [2020-10-14 09:26:55,294 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 09:26:55,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16556 states. [2020-10-14 09:26:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16556 to 15950. [2020-10-14 09:26:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15950 states. [2020-10-14 09:26:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15950 states to 15950 states and 23934 transitions. [2020-10-14 09:26:56,358 INFO L78 Accepts]: Start accepts. Automaton has 15950 states and 23934 transitions. Word has length 115 [2020-10-14 09:26:56,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:26:56,358 INFO L479 AbstractCegarLoop]: Abstraction has 15950 states and 23934 transitions. [2020-10-14 09:26:56,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:26:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 15950 states and 23934 transitions. [2020-10-14 09:26:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 09:26:56,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:26:56,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:26:56,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:26:56,364 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:26:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:26:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash 383587609, now seen corresponding path program 1 times [2020-10-14 09:26:56,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:26:56,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466706687] [2020-10-14 09:26:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:26:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:26:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:26:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:01,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 09:27:01,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:27:01,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4692 [2020-10-14 09:27:01,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:01,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:27:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:27:01,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:01,325 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:27:01,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:01,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:01,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:01,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:01,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:27:01,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:01,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:01,352 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 09:27:01,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466706687] [2020-10-14 09:27:01,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:01,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:01,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868688090] [2020-10-14 09:27:01,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:01,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:01,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:01,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:01,354 INFO L87 Difference]: Start difference. First operand 15950 states and 23934 transitions. Second operand 5 states. [2020-10-14 09:27:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:03,425 INFO L93 Difference]: Finished difference Result 27578 states and 41387 transitions. [2020-10-14 09:27:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:03,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-14 09:27:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:03,438 INFO L225 Difference]: With dead ends: 27578 [2020-10-14 09:27:03,439 INFO L226 Difference]: Without dead ends: 11712 [2020-10-14 09:27:03,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11712 states. [2020-10-14 09:27:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 11712. [2020-10-14 09:27:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11712 states. [2020-10-14 09:27:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11712 states to 11712 states and 17567 transitions. [2020-10-14 09:27:04,261 INFO L78 Accepts]: Start accepts. Automaton has 11712 states and 17567 transitions. Word has length 116 [2020-10-14 09:27:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:04,262 INFO L479 AbstractCegarLoop]: Abstraction has 11712 states and 17567 transitions. [2020-10-14 09:27:04,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 11712 states and 17567 transitions. [2020-10-14 09:27:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 09:27:04,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:04,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:04,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:27:04,265 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:04,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1886705404, now seen corresponding path program 1 times [2020-10-14 09:27:04,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:04,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521786632] [2020-10-14 09:27:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:04,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:09,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:09,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 09:27:09,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:27:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:27:09,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:09,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 09:27:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 09:27:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:09,523 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:27:09,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:09,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:09,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:09,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:09,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:27:09,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:09,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:09,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:09,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:09,559 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 09:27:09,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521786632] [2020-10-14 09:27:09,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:09,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:09,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761302515] [2020-10-14 09:27:09,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:09,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:09,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:09,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:09,561 INFO L87 Difference]: Start difference. First operand 11712 states and 17567 transitions. Second operand 5 states. [2020-10-14 09:27:09,774 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:27:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:13,510 INFO L93 Difference]: Finished difference Result 40599 states and 62894 transitions. [2020-10-14 09:27:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:27:13,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 09:27:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:13,549 INFO L225 Difference]: With dead ends: 40599 [2020-10-14 09:27:13,549 INFO L226 Difference]: Without dead ends: 30627 [2020-10-14 09:27:13,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30627 states. [2020-10-14 09:27:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30627 to 30584. [2020-10-14 09:27:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30584 states. [2020-10-14 09:27:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30584 states to 30584 states and 47150 transitions. [2020-10-14 09:27:15,941 INFO L78 Accepts]: Start accepts. Automaton has 30584 states and 47150 transitions. Word has length 121 [2020-10-14 09:27:15,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:15,941 INFO L479 AbstractCegarLoop]: Abstraction has 30584 states and 47150 transitions. [2020-10-14 09:27:15,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand 30584 states and 47150 transitions. [2020-10-14 09:27:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 09:27:15,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:15,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:15,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:27:15,945 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:15,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1797900251, now seen corresponding path program 1 times [2020-10-14 09:27:15,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:15,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909371579] [2020-10-14 09:27:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:16,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:16,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 09:27:16,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:27:16,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-14 09:27:16,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:16,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 09:27:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:27:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:16,710 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:27:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:16,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:16,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:16,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:27:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:16,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:16,747 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 09:27:16,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909371579] [2020-10-14 09:27:16,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:16,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:16,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690454628] [2020-10-14 09:27:16,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:16,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:16,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:16,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:16,750 INFO L87 Difference]: Start difference. First operand 30584 states and 47150 transitions. Second operand 5 states. [2020-10-14 09:27:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:20,213 INFO L93 Difference]: Finished difference Result 61029 states and 94108 transitions. [2020-10-14 09:27:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:20,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 09:27:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:20,263 INFO L225 Difference]: With dead ends: 61029 [2020-10-14 09:27:20,264 INFO L226 Difference]: Without dead ends: 30562 [2020-10-14 09:27:20,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30562 states. [2020-10-14 09:27:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30562 to 30556. [2020-10-14 09:27:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30556 states. [2020-10-14 09:27:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30556 states to 30556 states and 47108 transitions. [2020-10-14 09:27:22,472 INFO L78 Accepts]: Start accepts. Automaton has 30556 states and 47108 transitions. Word has length 121 [2020-10-14 09:27:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:22,472 INFO L479 AbstractCegarLoop]: Abstraction has 30556 states and 47108 transitions. [2020-10-14 09:27:22,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 30556 states and 47108 transitions. [2020-10-14 09:27:22,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 09:27:22,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:22,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:22,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:27:22,475 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:22,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1212939505, now seen corresponding path program 1 times [2020-10-14 09:27:22,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:22,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845143555] [2020-10-14 09:27:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:23,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:23,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 09:27:23,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:27:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-14 09:27:23,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:23,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:27:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:27:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 09:27:23,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:23,265 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:27:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:23,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:23,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:23,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:23,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:27:23,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:23,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:23,302 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 09:27:23,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845143555] [2020-10-14 09:27:23,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:23,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:23,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818121646] [2020-10-14 09:27:23,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:27:23,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:27:23,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:27:23,304 INFO L87 Difference]: Start difference. First operand 30556 states and 47108 transitions. Second operand 5 states. [2020-10-14 09:27:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:27,380 INFO L93 Difference]: Finished difference Result 58745 states and 90497 transitions. [2020-10-14 09:27:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:27:27,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 09:27:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:27,419 INFO L225 Difference]: With dead ends: 58745 [2020-10-14 09:27:27,419 INFO L226 Difference]: Without dead ends: 28466 [2020-10-14 09:27:27,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28466 states. [2020-10-14 09:27:29,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28466 to 28278. [2020-10-14 09:27:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28278 states. [2020-10-14 09:27:29,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28278 states to 28278 states and 43479 transitions. [2020-10-14 09:27:29,523 INFO L78 Accepts]: Start accepts. Automaton has 28278 states and 43479 transitions. Word has length 121 [2020-10-14 09:27:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:29,523 INFO L479 AbstractCegarLoop]: Abstraction has 28278 states and 43479 transitions. [2020-10-14 09:27:29,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:27:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 28278 states and 43479 transitions. [2020-10-14 09:27:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:27:29,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:29,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:29,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:27:29,527 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:29,527 INFO L82 PathProgramCache]: Analyzing trace with hash 546537679, now seen corresponding path program 1 times [2020-10-14 09:27:29,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:29,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306631329] [2020-10-14 09:27:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:30,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:30,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:33,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:34,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:34,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:27:34,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:27:34,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:27:34,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:34,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:27:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:27:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:34,754 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:27:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:34,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:34,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:34,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:34,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:27:34,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:34,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:27:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:27:34,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:34,782 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 09:27:34,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306631329] [2020-10-14 09:27:34,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:34,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:27:34,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105234252] [2020-10-14 09:27:34,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:27:34,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:34,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:27:34,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:27:34,785 INFO L87 Difference]: Start difference. First operand 28278 states and 43479 transitions. Second operand 4 states. [2020-10-14 09:27:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:38,786 INFO L93 Difference]: Finished difference Result 51836 states and 79697 transitions. [2020-10-14 09:27:38,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:27:38,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-14 09:27:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:38,844 INFO L225 Difference]: With dead ends: 51836 [2020-10-14 09:27:38,845 INFO L226 Difference]: Without dead ends: 36342 [2020-10-14 09:27:38,867 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 09:27:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36342 states. [2020-10-14 09:27:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36342 to 28278. [2020-10-14 09:27:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28278 states. [2020-10-14 09:27:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28278 states to 28278 states and 43474 transitions. [2020-10-14 09:27:41,237 INFO L78 Accepts]: Start accepts. Automaton has 28278 states and 43474 transitions. Word has length 122 [2020-10-14 09:27:41,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:41,237 INFO L479 AbstractCegarLoop]: Abstraction has 28278 states and 43474 transitions. [2020-10-14 09:27:41,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:27:41,237 INFO L276 IsEmpty]: Start isEmpty. Operand 28278 states and 43474 transitions. [2020-10-14 09:27:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 09:27:41,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:41,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:27:41,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:27:41,240 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:41,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:41,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1638914725, now seen corresponding path program 1 times [2020-10-14 09:27:41,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:41,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822558302] [2020-10-14 09:27:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:41,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:41,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:45,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:45,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 09:27:45,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:27:45,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3779 [2020-10-14 09:27:45,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:45,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:27:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:27:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 09:27:45,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:45,283 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:27:45,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:45,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:45,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:45,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:27:45,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:45,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:27:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:45,326 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 09:27:45,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822558302] [2020-10-14 09:27:45,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:45,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:45,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594893343] [2020-10-14 09:27:45,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:27:45,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:45,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:27:45,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:45,328 INFO L87 Difference]: Start difference. First operand 28278 states and 43474 transitions. Second operand 6 states. [2020-10-14 09:27:45,571 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-14 09:27:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:27:52,163 INFO L93 Difference]: Finished difference Result 81213 states and 125941 transitions. [2020-10-14 09:27:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:27:52,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-14 09:27:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:27:52,246 INFO L225 Difference]: With dead ends: 81213 [2020-10-14 09:27:52,246 INFO L226 Difference]: Without dead ends: 54193 [2020-10-14 09:27:52,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:27:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54193 states. [2020-10-14 09:27:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54193 to 54177. [2020-10-14 09:27:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54177 states. [2020-10-14 09:27:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54177 states to 54177 states and 83568 transitions. [2020-10-14 09:27:57,144 INFO L78 Accepts]: Start accepts. Automaton has 54177 states and 83568 transitions. Word has length 123 [2020-10-14 09:27:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:27:57,144 INFO L479 AbstractCegarLoop]: Abstraction has 54177 states and 83568 transitions. [2020-10-14 09:27:57,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:27:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 54177 states and 83568 transitions. [2020-10-14 09:27:57,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 09:27:57,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:27:57,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:27:57,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 09:27:57,148 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:27:57,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:27:57,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1014224768, now seen corresponding path program 1 times [2020-10-14 09:27:57,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:27:57,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797549231] [2020-10-14 09:27:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:27:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:58,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:58,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 09:27:58,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:27:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-14 09:27:58,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:58,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:27:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:27:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 09:27:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:58,312 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-14 09:27:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:27:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:27:58,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:27:58,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:27:58,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:27:58,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:27:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:27:58,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:27:58,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:27:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:27:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:27:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:27:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:27:58,351 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 09:27:58,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797549231] [2020-10-14 09:27:58,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:27:58,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:27:58,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919858993] [2020-10-14 09:27:58,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:27:58,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:27:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:27:58,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:27:58,353 INFO L87 Difference]: Start difference. First operand 54177 states and 83568 transitions. Second operand 6 states. [2020-10-14 09:27:58,580 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:28:05,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:28:05,321 INFO L93 Difference]: Finished difference Result 107316 states and 165963 transitions. [2020-10-14 09:28:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:28:05,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-14 09:28:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:28:05,444 INFO L225 Difference]: With dead ends: 107316 [2020-10-14 09:28:05,444 INFO L226 Difference]: Without dead ends: 54177 [2020-10-14 09:28:05,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:28:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54177 states. [2020-10-14 09:28:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54177 to 54177. [2020-10-14 09:28:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54177 states. [2020-10-14 09:28:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54177 states to 54177 states and 82918 transitions. [2020-10-14 09:28:10,757 INFO L78 Accepts]: Start accepts. Automaton has 54177 states and 82918 transitions. Word has length 123 [2020-10-14 09:28:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:28:10,757 INFO L479 AbstractCegarLoop]: Abstraction has 54177 states and 82918 transitions. [2020-10-14 09:28:10,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:28:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 54177 states and 82918 transitions. [2020-10-14 09:28:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 09:28:10,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:28:10,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:28:10,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 09:28:10,761 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:28:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:28:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash -293154203, now seen corresponding path program 1 times [2020-10-14 09:28:10,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:28:10,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594601188] [2020-10-14 09:28:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:28:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 09:28:10,790 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 09:28:10,791 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 09:28:10,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 09:28:10,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 09:28:10 BoogieIcfgContainer [2020-10-14 09:28:10,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 09:28:10,853 INFO L168 Benchmark]: Toolchain (without parser) took 197754.82 ms. Allocated memory was 146.3 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 100.8 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 811.3 MB. Max. memory is 7.1 GB. [2020-10-14 09:28:10,853 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. [2020-10-14 09:28:10,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.04 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 172.9 MB in the end (delta: -72.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-10-14 09:28:10,854 INFO L168 Benchmark]: Boogie Preprocessor took 153.86 ms. Allocated memory is still 203.4 MB. Free memory was 172.9 MB in the beginning and 168.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-10-14 09:28:10,855 INFO L168 Benchmark]: RCFGBuilder took 1439.04 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.8 MB in the beginning and 180.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-10-14 09:28:10,855 INFO L168 Benchmark]: TraceAbstraction took 195402.61 ms. Allocated memory was 236.5 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 178.3 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 798.6 MB. Max. memory is 7.1 GB. [2020-10-14 09:28:10,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.04 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 172.9 MB in the end (delta: -72.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.86 ms. Allocated memory is still 203.4 MB. Free memory was 172.9 MB in the beginning and 168.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1439.04 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.8 MB in the beginning and 180.0 MB in the end (delta: -11.2 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195402.61 ms. Allocated memory was 236.5 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 178.3 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 798.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 572]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] _Bool newmax1 = 0; [L48] char id2 = '\x0'; [L49] unsigned char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] _Bool newmax2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L63] _Bool newmax3 = 0; [L67] void (*nodes[3])() = { &node1, &node2, &node3 }; [L71] int __return_1248; [L72] int __return_1394; [L73] int __return_1872; [L74] int __return_1528; [L75] int __return_1653; [L78] int main__c1; [L79] int main__i2; [L80] main__c1 = 0 [L81] ep12 = __VERIFIER_nondet_bool() [L82] ep13 = __VERIFIER_nondet_bool() [L83] ep21 = __VERIFIER_nondet_bool() [L84] ep23 = __VERIFIER_nondet_bool() [L85] ep31 = __VERIFIER_nondet_bool() [L86] ep32 = __VERIFIER_nondet_bool() [L87] id1 = __VERIFIER_nondet_char() [L88] r1 = __VERIFIER_nondet_uchar() [L89] st1 = __VERIFIER_nondet_char() [L90] nl1 = __VERIFIER_nondet_char() [L91] m1 = __VERIFIER_nondet_char() [L92] max1 = __VERIFIER_nondet_char() [L93] mode1 = __VERIFIER_nondet_bool() [L94] newmax1 = __VERIFIER_nondet_bool() [L95] id2 = __VERIFIER_nondet_char() [L96] r2 = __VERIFIER_nondet_uchar() [L97] st2 = __VERIFIER_nondet_char() [L98] nl2 = __VERIFIER_nondet_char() [L99] m2 = __VERIFIER_nondet_char() [L100] max2 = __VERIFIER_nondet_char() [L101] mode2 = __VERIFIER_nondet_bool() [L102] newmax2 = __VERIFIER_nondet_bool() [L103] id3 = __VERIFIER_nondet_char() [L104] r3 = __VERIFIER_nondet_uchar() [L105] st3 = __VERIFIER_nondet_char() [L106] nl3 = __VERIFIER_nondet_char() [L107] m3 = __VERIFIER_nondet_char() [L108] max3 = __VERIFIER_nondet_char() [L109] mode3 = __VERIFIER_nondet_bool() [L110] newmax3 = __VERIFIER_nondet_bool() [L112] _Bool init__r121; [L113] _Bool init__r131; [L114] _Bool init__r211; [L115] _Bool init__r231; [L116] _Bool init__r311; [L117] _Bool init__r321; [L118] _Bool init__r122; [L119] int init__tmp; [L120] _Bool init__r132; [L121] int init__tmp___0; [L122] _Bool init__r212; [L123] int init__tmp___1; [L124] _Bool init__r232; [L125] int init__tmp___2; [L126] _Bool init__r312; [L127] int init__tmp___3; [L128] _Bool init__r322; [L129] int init__tmp___4; [L130] int init__tmp___5; [L131] init__r121 = ep12 [L132] init__r131 = ep13 [L133] init__r211 = ep21 [L134] init__r231 = ep23 [L135] init__r311 = ep31 [L136] init__r321 = ep32 [L137] COND TRUE !(init__r121 == 0) [L139] init__tmp = 1 [L141] init__r122 = (_Bool)init__tmp [L142] COND FALSE !(!(init__r131 == 0)) [L1967] COND TRUE !(init__r121 == 0) [L1969] COND TRUE !(ep23 == 0) [L1971] init__tmp___0 = 1 [L146] init__r132 = (_Bool)init__tmp___0 [L147] COND FALSE !(!(init__r211 == 0)) [L1944] COND TRUE !(init__r231 == 0) [L1946] COND TRUE !(ep31 == 0) [L1948] init__tmp___1 = 1 [L151] init__r212 = (_Bool)init__tmp___1 [L152] COND TRUE !(init__r231 == 0) [L154] init__tmp___2 = 1 [L156] init__r232 = (_Bool)init__tmp___2 [L157] COND TRUE !(init__r311 == 0) [L159] init__tmp___3 = 1 [L161] init__r312 = (_Bool)init__tmp___3 [L162] COND FALSE !(!(init__r321 == 0)) [L1875] COND TRUE !(init__r311 == 0) [L1877] COND TRUE !(ep12 == 0) [L1879] init__tmp___4 = 1 [L166] init__r322 = (_Bool)init__tmp___4 [L167] COND TRUE ((int)id1) != ((int)id2) [L169] COND TRUE ((int)id1) != ((int)id3) [L171] COND TRUE ((int)id2) != ((int)id3) [L173] COND TRUE ((int)id1) >= 0 [L175] COND TRUE ((int)id2) >= 0 [L177] COND TRUE ((int)id3) >= 0 [L179] COND TRUE ((int)r1) == 0 [L181] COND TRUE ((int)r2) == 0 [L183] COND TRUE ((int)r3) == 0 [L185] COND TRUE !(init__r122 == 0) [L187] COND TRUE !(init__r132 == 0) [L189] COND TRUE !(init__r212 == 0) [L191] COND TRUE !(init__r232 == 0) [L193] COND TRUE !(init__r312 == 0) [L195] COND TRUE !(init__r322 == 0) [L197] COND TRUE ((int)max1) == ((int)id1) [L199] COND TRUE ((int)max2) == ((int)id2) [L201] COND TRUE ((int)max3) == ((int)id3) [L203] COND TRUE ((int)st1) == 0 [L205] COND TRUE ((int)st2) == 0 [L207] COND TRUE ((int)st3) == 0 [L209] COND TRUE ((int)nl1) == 0 [L211] COND TRUE ((int)nl2) == 0 [L213] COND TRUE ((int)nl3) == 0 [L215] COND TRUE ((int)mode1) == 0 [L217] COND TRUE ((int)mode2) == 0 [L219] COND TRUE ((int)mode3) == 0 [L221] COND TRUE !(newmax1 == 0) [L223] COND TRUE !(newmax2 == 0) [L225] COND TRUE !(newmax3 == 0) [L227] init__tmp___5 = 1 [L228] __return_1248 = init__tmp___5 [L229] main__i2 = __return_1248 [L230] COND TRUE main__i2 != 0 [L232] p12_old = nomsg [L233] p12_new = nomsg [L234] p13_old = nomsg [L235] p13_new = nomsg [L236] p21_old = nomsg [L237] p21_new = nomsg [L238] p23_old = nomsg [L239] p23_new = nomsg [L240] p31_old = nomsg [L241] p31_new = nomsg [L242] p32_old = nomsg [L243] p32_new = nomsg [L244] main__i2 = 0 [L246] _Bool node1__newmax; [L247] node1__newmax = 0 [L248] COND FALSE !(!(mode1 == 0)) [L254] COND TRUE ((int)r1) < 2 [L256] COND TRUE !(ep12 == 0) [L258] COND TRUE !(newmax1 == 0) [L260] int node1____CPAchecker_TMP_0; [L261] COND TRUE max1 != nomsg [L263] COND TRUE p12_new == nomsg [L265] node1____CPAchecker_TMP_0 = max1 [L267] p12_new = node1____CPAchecker_TMP_0 [L269] COND FALSE !(!(ep13 == 0)) [L282] mode1 = 1 [L284] _Bool node2__newmax; [L285] node2__newmax = 0 [L286] COND FALSE !(!(mode2 == 0)) [L292] COND TRUE ((int)r2) < 2 [L294] COND FALSE !(!(ep21 == 0)) [L307] COND TRUE !(ep23 == 0) [L309] COND TRUE !(newmax2 == 0) [L311] int node2____CPAchecker_TMP_1; [L312] COND TRUE max2 != nomsg [L314] COND TRUE p23_new == nomsg [L316] node2____CPAchecker_TMP_1 = max2 [L318] p23_new = node2____CPAchecker_TMP_1 [L320] mode2 = 1 [L322] _Bool node3__newmax; [L323] node3__newmax = 0 [L324] COND FALSE !(!(mode3 == 0)) [L330] COND TRUE ((int)r3) < 2 [L332] COND TRUE !(ep31 == 0) [L334] COND TRUE !(newmax3 == 0) [L336] int node3____CPAchecker_TMP_0; [L337] COND TRUE max3 != nomsg [L339] COND TRUE p31_new == nomsg [L341] node3____CPAchecker_TMP_0 = max3 [L343] p31_new = node3____CPAchecker_TMP_0 [L345] COND FALSE !(!(ep32 == 0)) [L358] mode3 = 1 [L359] p12_old = p12_new [L360] p12_new = nomsg [L361] p13_old = p13_new [L362] p13_new = nomsg [L363] p21_old = p21_new [L364] p21_new = nomsg [L365] p23_old = p23_new [L366] p23_new = nomsg [L367] p31_old = p31_new [L368] p31_new = nomsg [L369] p32_old = p32_new [L370] p32_new = nomsg [L372] int check__tmp; [L373] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L375] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L377] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L379] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L381] COND FALSE !(((int)r1) >= 2) [L387] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L389] COND TRUE ((int)r1) < 2 [L391] COND FALSE !(((int)r1) >= 2) [L397] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L399] COND TRUE ((int)r1) < 2 [L401] check__tmp = 1 [L402] __return_1394 = check__tmp [L403] main__c1 = __return_1394 [L405] _Bool __tmp_1; [L406] __tmp_1 = main__c1 [L407] _Bool assert__arg; [L408] assert__arg = __tmp_1 [L409] COND FALSE !(assert__arg == 0) [L416] _Bool node1__newmax; [L417] node1__newmax = 0 [L418] COND TRUE !(mode1 == 0) [L420] COND FALSE !(r1 == 255) [L426] r1 = r1 + 1 [L427] COND FALSE !(!(ep21 == 0)) [L436] COND TRUE !(ep31 == 0) [L438] m1 = p31_old [L439] p31_old = nomsg [L440] COND FALSE !(((int)m1) > ((int)max1)) [L445] newmax1 = node1__newmax [L446] COND TRUE ((int)r1) == 1 [L448] COND TRUE ((int)max1) == ((int)id1) [L450] st1 = 1 [L451] mode1 = 0 [L453] _Bool node2__newmax; [L454] node2__newmax = 0 [L455] COND TRUE !(mode2 == 0) [L457] COND FALSE !(r2 == 255) [L463] r2 = r2 + 1 [L464] COND TRUE !(ep12 == 0) [L466] m2 = p12_old [L467] p12_old = nomsg [L468] COND TRUE ((int)m2) > ((int)max2) [L470] max2 = m2 [L471] node2__newmax = 1 [L473] COND FALSE !(!(ep32 == 0)) [L482] newmax2 = node2__newmax [L483] COND FALSE !(((int)r2) == 2) [L489] mode2 = 0 [L491] _Bool node3__newmax; [L492] node3__newmax = 0 [L493] COND TRUE !(mode3 == 0) [L495] COND FALSE !(r3 == 255) [L501] r3 = r3 + 1 [L502] COND FALSE !(!(ep13 == 0)) [L511] COND TRUE !(ep23 == 0) [L513] m3 = p23_old [L514] p23_old = nomsg [L515] COND TRUE ((int)m3) > ((int)max3) [L517] max3 = m3 [L518] node3__newmax = 1 [L520] newmax3 = node3__newmax [L521] COND FALSE !(((int)r3) == 2) [L527] mode3 = 0 [L528] p12_old = p12_new [L529] p12_new = nomsg [L530] p13_old = p13_new [L531] p13_new = nomsg [L532] p21_old = p21_new [L533] p21_new = nomsg [L534] p23_old = p23_new [L535] p23_new = nomsg [L536] p31_old = p31_new [L537] p31_new = nomsg [L538] p32_old = p32_new [L539] p32_new = nomsg [L541] int check__tmp; [L542] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L544] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L546] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L548] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L550] COND FALSE !(((int)r1) >= 2) [L556] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L562] check__tmp = 0 [L563] __return_1872 = check__tmp [L564] main__c1 = __return_1872 [L566] _Bool __tmp_2; [L567] __tmp_2 = main__c1 [L568] _Bool assert__arg; [L569] assert__arg = __tmp_2 [L570] COND TRUE assert__arg == 0 [L572] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 279 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 195.2s, OverallIterations: 23, TraceHistogramMax: 1, AutomataDifference: 64.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11864 SDtfs, 10088 SDslu, 9325 SDs, 0 SdLazy, 12834 SolverSat, 181 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54177occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 26.9s AutomataMinimizationTime, 22 MinimizatonAttempts, 18461 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 101.7s InterpolantComputationTime, 2580 NumberOfCodeBlocks, 2580 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2435 ConstructedInterpolants, 0 QuantifiedInterpolants, 1437811 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...