/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/toy1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:50:34,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:50:34,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:50:34,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:50:34,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:50:34,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:50:34,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:50:34,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:50:34,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:50:34,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:50:34,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:50:34,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:50:34,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:50:34,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:50:34,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:50:34,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:50:34,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:50:34,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:50:34,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:50:34,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:50:34,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:50:34,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:50:34,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:50:34,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:50:34,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:50:34,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:50:34,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:50:34,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:50:34,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:50:34,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:50:34,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:50:34,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:50:34,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:50:34,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:50:34,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:50:34,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:50:34,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:50:34,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:50:34,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:50:34,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:50:34,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:50:34,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:50:34,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:50:34,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:50:34,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:50:34,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:50:34,994 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:50:34,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:50:34,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:50:34,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:50:34,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:50:34,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:50:34,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:50:34,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:50:34,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:50:34,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:50:34,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:50:34,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:50:34,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:50:34,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:50:34,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:50:34,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:50:34,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:50:34,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:50:34,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:50:34,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:50:34,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:50:34,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:50:34,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:50:35,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:50:35,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:50:35,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:50:35,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:50:35,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:50:35,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:50:35,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:50:35,339 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:50:35,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-13 15:50:35,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac70c921/5c529d59320e43699ef1b23217e1d648/FLAG2801b3651 [2020-10-13 15:50:35,845 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:50:35,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-13 15:50:35,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac70c921/5c529d59320e43699ef1b23217e1d648/FLAG2801b3651 [2020-10-13 15:50:36,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac70c921/5c529d59320e43699ef1b23217e1d648 [2020-10-13 15:50:36,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:50:36,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:50:36,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:50:36,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:50:36,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:50:36,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2584cbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36, skipping insertion in model container [2020-10-13 15:50:36,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:50:36,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:50:36,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:50:36,540 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:50:36,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:50:36,715 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:50:36,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36 WrapperNode [2020-10-13 15:50:36,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:50:36,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:50:36,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:50:36,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:50:36,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:50:36,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:50:36,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:50:36,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:50:36,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:50:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:50:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:50:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-13 15:50:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-13 15:50:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-13 15:50:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-13 15:50:36,871 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-13 15:50:36,871 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-13 15:50:36,871 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-13 15:50:36,871 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-13 15:50:36,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:50:36,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:50:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:50:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-13 15:50:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-13 15:50:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-13 15:50:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-13 15:50:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-13 15:50:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:50:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-13 15:50:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-13 15:50:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:50:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:50:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:50:37,463 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:50:37,464 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-13 15:50:37,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:50:37 BoogieIcfgContainer [2020-10-13 15:50:37,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:50:37,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:50:37,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:50:37,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:50:37,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:50:36" (1/3) ... [2020-10-13 15:50:37,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df6ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:50:37, skipping insertion in model container [2020-10-13 15:50:37,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (2/3) ... [2020-10-13 15:50:37,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df6ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:50:37, skipping insertion in model container [2020-10-13 15:50:37,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:50:37" (3/3) ... [2020-10-13 15:50:37,480 INFO L109 eAbstractionObserver]: Analyzing ICFG toy1.cil.c [2020-10-13 15:50:37,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:50:37,499 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:50:37,514 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:50:37,541 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:50:37,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:50:37,541 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:50:37,542 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:50:37,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:50:37,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:50:37,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:50:37,543 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:50:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-13 15:50:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:37,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:37,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:50:37,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:37,586 INFO L82 PathProgramCache]: Analyzing trace with hash -854031758, now seen corresponding path program 1 times [2020-10-13 15:50:37,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:37,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442049203] [2020-10-13 15:50:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:39,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:40,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:50:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4212 [2020-10-13 15:50:42,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:50:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:50:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 15:50:42,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 15:50:42,272 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 15:50:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:42,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:42,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:42,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:42,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:50:42,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:42,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:42,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:42,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442049203] [2020-10-13 15:50:42,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:42,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:42,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035066891] [2020-10-13 15:50:42,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:42,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:42,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:42,366 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2020-10-13 15:50:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:43,206 INFO L93 Difference]: Finished difference Result 312 states and 535 transitions. [2020-10-13 15:50:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:50:43,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:43,223 INFO L225 Difference]: With dead ends: 312 [2020-10-13 15:50:43,223 INFO L226 Difference]: Without dead ends: 181 [2020-10-13 15:50:43,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-13 15:50:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 153. [2020-10-13 15:50:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 15:50:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 248 transitions. [2020-10-13 15:50:43,291 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 248 transitions. Word has length 47 [2020-10-13 15:50:43,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:43,291 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 248 transitions. [2020-10-13 15:50:43,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 248 transitions. [2020-10-13 15:50:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:43,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:43,294 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] [2020-10-13 15:50:43,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:50:43,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:43,296 INFO L82 PathProgramCache]: Analyzing trace with hash -853978965, now seen corresponding path program 1 times [2020-10-13 15:50:43,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:43,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635823782] [2020-10-13 15:50:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:45,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:45,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:45,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:50:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2375 [2020-10-13 15:50:45,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:50:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:50:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:50:45,864 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 15:50:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:45,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:45,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:45,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:50:45,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:45,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635823782] [2020-10-13 15:50:45,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:45,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:45,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839060761] [2020-10-13 15:50:45,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:45,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:45,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:45,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:45,900 INFO L87 Difference]: Start difference. First operand 153 states and 248 transitions. Second operand 4 states. [2020-10-13 15:50:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:46,610 INFO L93 Difference]: Finished difference Result 318 states and 519 transitions. [2020-10-13 15:50:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:46,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:46,613 INFO L225 Difference]: With dead ends: 318 [2020-10-13 15:50:46,613 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 15:50:46,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 15:50:46,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2020-10-13 15:50:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 15:50:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 247 transitions. [2020-10-13 15:50:46,635 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 247 transitions. Word has length 47 [2020-10-13 15:50:46,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:46,636 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 247 transitions. [2020-10-13 15:50:46,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 247 transitions. [2020-10-13 15:50:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:46,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:46,638 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] [2020-10-13 15:50:46,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:50:46,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:46,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:46,639 INFO L82 PathProgramCache]: Analyzing trace with hash -459612179, now seen corresponding path program 1 times [2020-10-13 15:50:46,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:46,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585342262] [2020-10-13 15:50:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:46,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:48,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:48,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:50:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1708 [2020-10-13 15:50:48,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:48,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:50:48,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:50:48,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:48,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:48,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:50:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:48,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585342262] [2020-10-13 15:50:48,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:48,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:48,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722447834] [2020-10-13 15:50:48,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:48,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:48,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:48,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:48,519 INFO L87 Difference]: Start difference. First operand 153 states and 247 transitions. Second operand 4 states. [2020-10-13 15:50:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:49,186 INFO L93 Difference]: Finished difference Result 316 states and 514 transitions. [2020-10-13 15:50:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:49,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:49,188 INFO L225 Difference]: With dead ends: 316 [2020-10-13 15:50:49,189 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 15:50:49,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:49,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 15:50:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2020-10-13 15:50:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 15:50:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 246 transitions. [2020-10-13 15:50:49,208 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 246 transitions. Word has length 47 [2020-10-13 15:50:49,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:49,208 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 246 transitions. [2020-10-13 15:50:49,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:49,209 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 246 transitions. [2020-10-13 15:50:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:49,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:49,211 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] [2020-10-13 15:50:49,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:50:49,211 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:49,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1591371819, now seen corresponding path program 1 times [2020-10-13 15:50:49,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:49,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840540052] [2020-10-13 15:50:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:49,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:50,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:50,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:50,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:50:50,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-10-13 15:50:50,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:50,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:50:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:50,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:50:50,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:50,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840540052] [2020-10-13 15:50:50,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:50,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:50,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329852075] [2020-10-13 15:50:50,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:50,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:50,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:50,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:50,512 INFO L87 Difference]: Start difference. First operand 153 states and 246 transitions. Second operand 4 states. [2020-10-13 15:50:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:51,112 INFO L93 Difference]: Finished difference Result 315 states and 511 transitions. [2020-10-13 15:50:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:51,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:51,114 INFO L225 Difference]: With dead ends: 315 [2020-10-13 15:50:51,114 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 15:50:51,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 15:50:51,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2020-10-13 15:50:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 15:50:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 238 transitions. [2020-10-13 15:50:51,133 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 238 transitions. Word has length 47 [2020-10-13 15:50:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:51,133 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 238 transitions. [2020-10-13 15:50:51,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 238 transitions. [2020-10-13 15:50:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:51,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:51,135 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] [2020-10-13 15:50:51,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:50:51,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:51,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1941687087, now seen corresponding path program 1 times [2020-10-13 15:50:51,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:51,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807263353] [2020-10-13 15:50:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:51,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:51,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:51,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:52,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:52,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:50:52,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-13 15:50:52,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:50:52,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:52,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:52,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:52,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:50:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:52,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807263353] [2020-10-13 15:50:52,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:52,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:52,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791499961] [2020-10-13 15:50:52,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:52,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:52,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:52,282 INFO L87 Difference]: Start difference. First operand 153 states and 238 transitions. Second operand 4 states. [2020-10-13 15:50:52,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:52,901 INFO L93 Difference]: Finished difference Result 314 states and 494 transitions. [2020-10-13 15:50:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:52,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:52,903 INFO L225 Difference]: With dead ends: 314 [2020-10-13 15:50:52,904 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 15:50:52,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:52,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 15:50:52,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2020-10-13 15:50:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 15:50:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 236 transitions. [2020-10-13 15:50:52,920 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 236 transitions. Word has length 47 [2020-10-13 15:50:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:52,920 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 236 transitions. [2020-10-13 15:50:52,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 236 transitions. [2020-10-13 15:50:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:52,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:52,922 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] [2020-10-13 15:50:52,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:50:52,922 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:52,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2078520595, now seen corresponding path program 1 times [2020-10-13 15:50:52,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:52,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165519262] [2020-10-13 15:50:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:54,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:54,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:50:54,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-13 15:50:54,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:54,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:54,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:54,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:50:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:54,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:54,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:54,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:50:54,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:54,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165519262] [2020-10-13 15:50:54,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:54,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:54,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905503456] [2020-10-13 15:50:54,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:54,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:54,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:54,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:54,159 INFO L87 Difference]: Start difference. First operand 153 states and 236 transitions. Second operand 4 states. [2020-10-13 15:50:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:54,756 INFO L93 Difference]: Finished difference Result 313 states and 489 transitions. [2020-10-13 15:50:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:54,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:54,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:54,759 INFO L225 Difference]: With dead ends: 313 [2020-10-13 15:50:54,759 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 15:50:54,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 15:50:54,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2020-10-13 15:50:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 15:50:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 230 transitions. [2020-10-13 15:50:54,781 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 230 transitions. Word has length 47 [2020-10-13 15:50:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:54,781 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 230 transitions. [2020-10-13 15:50:54,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 230 transitions. [2020-10-13 15:50:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:54,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:54,785 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] [2020-10-13 15:50:54,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:50:54,785 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:54,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1158066003, now seen corresponding path program 1 times [2020-10-13 15:50:54,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:54,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575159168] [2020-10-13 15:50:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:55,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:55,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:55,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:50:55,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-13 15:50:55,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:50:55,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:55,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:55,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:55,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:55,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:55,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:50:55,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:55,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:55,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575159168] [2020-10-13 15:50:55,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:55,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:55,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542253773] [2020-10-13 15:50:55,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:55,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:55,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:55,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:55,928 INFO L87 Difference]: Start difference. First operand 153 states and 230 transitions. Second operand 4 states. [2020-10-13 15:50:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:56,763 INFO L93 Difference]: Finished difference Result 478 states and 732 transitions. [2020-10-13 15:50:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:56,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:56,768 INFO L225 Difference]: With dead ends: 478 [2020-10-13 15:50:56,768 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 15:50:56,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 15:50:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 292. [2020-10-13 15:50:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-13 15:50:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 439 transitions. [2020-10-13 15:50:56,805 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 439 transitions. Word has length 47 [2020-10-13 15:50:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:56,806 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 439 transitions. [2020-10-13 15:50:56,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 439 transitions. [2020-10-13 15:50:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:56,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:56,808 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] [2020-10-13 15:50:56,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:50:56,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:56,809 INFO L82 PathProgramCache]: Analyzing trace with hash -334848529, now seen corresponding path program 1 times [2020-10-13 15:50:56,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:56,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378301558] [2020-10-13 15:50:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:56,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:57,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:57,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:50:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-13 15:50:57,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:50:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:57,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:57,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:57,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:57,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:57,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:50:57,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:57,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:57,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:57,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:57,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:57,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378301558] [2020-10-13 15:50:57,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:57,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:57,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278476600] [2020-10-13 15:50:57,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:57,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:57,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:57,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:57,659 INFO L87 Difference]: Start difference. First operand 292 states and 439 transitions. Second operand 4 states. [2020-10-13 15:50:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:58,525 INFO L93 Difference]: Finished difference Result 877 states and 1345 transitions. [2020-10-13 15:50:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:58,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:58,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:58,530 INFO L225 Difference]: With dead ends: 877 [2020-10-13 15:50:58,530 INFO L226 Difference]: Without dead ends: 617 [2020-10-13 15:50:58,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:58,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-13 15:50:58,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 550. [2020-10-13 15:50:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-13 15:50:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 834 transitions. [2020-10-13 15:50:58,623 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 834 transitions. Word has length 47 [2020-10-13 15:50:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:58,625 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 834 transitions. [2020-10-13 15:50:58,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:58,625 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 834 transitions. [2020-10-13 15:50:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:58,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:58,630 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] [2020-10-13 15:50:58,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:50:58,630 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash -942789841, now seen corresponding path program 1 times [2020-10-13 15:50:58,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:58,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853343647] [2020-10-13 15:50:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:59,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:59,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:59,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:50:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-13 15:50:59,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:50:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:59,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:50:59,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:59,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853343647] [2020-10-13 15:50:59,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:59,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:59,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078776048] [2020-10-13 15:50:59,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:59,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:59,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:59,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:59,485 INFO L87 Difference]: Start difference. First operand 550 states and 834 transitions. Second operand 4 states. [2020-10-13 15:51:00,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:00,159 INFO L93 Difference]: Finished difference Result 1117 states and 1695 transitions. [2020-10-13 15:51:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:51:00,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:51:00,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:00,171 INFO L225 Difference]: With dead ends: 1117 [2020-10-13 15:51:00,171 INFO L226 Difference]: Without dead ends: 619 [2020-10-13 15:51:00,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-10-13 15:51:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 550. [2020-10-13 15:51:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-13 15:51:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 822 transitions. [2020-10-13 15:51:00,219 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 822 transitions. Word has length 47 [2020-10-13 15:51:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:00,220 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 822 transitions. [2020-10-13 15:51:00,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:51:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 822 transitions. [2020-10-13 15:51:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:51:00,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:00,221 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] [2020-10-13 15:51:00,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:51:00,222 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1760438291, now seen corresponding path program 1 times [2020-10-13 15:51:00,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:00,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966081473] [2020-10-13 15:51:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:00,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:51:00,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:51:00,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-13 15:51:00,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:00,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:00,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 15:51:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:51:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:00,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:00,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:51:00,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:51:00,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966081473] [2020-10-13 15:51:00,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:00,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:51:00,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595910601] [2020-10-13 15:51:00,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:51:00,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:00,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:51:00,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:51:00,805 INFO L87 Difference]: Start difference. First operand 550 states and 822 transitions. Second operand 4 states. [2020-10-13 15:51:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:01,755 INFO L93 Difference]: Finished difference Result 1617 states and 2483 transitions. [2020-10-13 15:51:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:51:01,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:51:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:01,771 INFO L225 Difference]: With dead ends: 1617 [2020-10-13 15:51:01,771 INFO L226 Difference]: Without dead ends: 1105 [2020-10-13 15:51:01,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:01,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-10-13 15:51:01,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1028. [2020-10-13 15:51:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2020-10-13 15:51:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1580 transitions. [2020-10-13 15:51:01,881 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1580 transitions. Word has length 47 [2020-10-13 15:51:01,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:01,882 INFO L479 AbstractCegarLoop]: Abstraction has 1028 states and 1580 transitions. [2020-10-13 15:51:01,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:51:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1580 transitions. [2020-10-13 15:51:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:51:01,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:01,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:01,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:51:01,886 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:01,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1060089530, now seen corresponding path program 1 times [2020-10-13 15:51:01,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:01,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708114442] [2020-10-13 15:51:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 15:51:06,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:51:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:51:06,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 15:51:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:51:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:06,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:06,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:06,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:06,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:06,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:06,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:07,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:51:07,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:07,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:51:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:51:07,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708114442] [2020-10-13 15:51:07,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:07,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:51:07,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742521136] [2020-10-13 15:51:07,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:51:07,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:07,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:51:07,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:07,058 INFO L87 Difference]: Start difference. First operand 1028 states and 1580 transitions. Second operand 5 states. [2020-10-13 15:51:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:08,563 INFO L93 Difference]: Finished difference Result 3349 states and 5326 transitions. [2020-10-13 15:51:08,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:51:08,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:51:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:08,583 INFO L225 Difference]: With dead ends: 3349 [2020-10-13 15:51:08,584 INFO L226 Difference]: Without dead ends: 2069 [2020-10-13 15:51:08,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-10-13 15:51:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1872. [2020-10-13 15:51:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2020-10-13 15:51:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2931 transitions. [2020-10-13 15:51:08,794 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2931 transitions. Word has length 67 [2020-10-13 15:51:08,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:08,795 INFO L479 AbstractCegarLoop]: Abstraction has 1872 states and 2931 transitions. [2020-10-13 15:51:08,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:51:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2931 transitions. [2020-10-13 15:51:08,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 15:51:08,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:08,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:08,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:51:08,800 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash -270654984, now seen corresponding path program 1 times [2020-10-13 15:51:08,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:08,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808765990] [2020-10-13 15:51:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:08,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:08,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:09,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:13,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:13,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:51:13,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:51:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:51:13,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 15:51:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:51:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:13,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:13,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:13,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:13,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:51:13,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:13,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:13,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:13,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:13,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:13,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 15:51:13,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:51:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:14,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 15:51:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:14,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:14,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:14,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:51:14,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:51:14,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808765990] [2020-10-13 15:51:14,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:14,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:51:14,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117997569] [2020-10-13 15:51:14,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:51:14,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:14,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:51:14,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:51:14,097 INFO L87 Difference]: Start difference. First operand 1872 states and 2931 transitions. Second operand 8 states. [2020-10-13 15:51:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:16,440 INFO L93 Difference]: Finished difference Result 6611 states and 11122 transitions. [2020-10-13 15:51:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 15:51:16,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-13 15:51:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:16,471 INFO L225 Difference]: With dead ends: 6611 [2020-10-13 15:51:16,471 INFO L226 Difference]: Without dead ends: 4351 [2020-10-13 15:51:16,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-13 15:51:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2020-10-13 15:51:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3494. [2020-10-13 15:51:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3494 states. [2020-10-13 15:51:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 5791 transitions. [2020-10-13 15:51:16,837 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 5791 transitions. Word has length 76 [2020-10-13 15:51:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:16,837 INFO L479 AbstractCegarLoop]: Abstraction has 3494 states and 5791 transitions. [2020-10-13 15:51:16,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:51:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 5791 transitions. [2020-10-13 15:51:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:51:16,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:16,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:16,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:51:16,844 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:16,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1783487925, now seen corresponding path program 1 times [2020-10-13 15:51:16,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:16,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299421612] [2020-10-13 15:51:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:21,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:51:21,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:51:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:51:21,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 15:51:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:51:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:21,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:21,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:21,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:21,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:51:21,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:21,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:21,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:21,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:21,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:21,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:21,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:21,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:21,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:21,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:51:21,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 15:51:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:51:22,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:22,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 15:51:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:51:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:22,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 15:51:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:22,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:22,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:22,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:22,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 15:51:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:22,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:22,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:22,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:22,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:51:22,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299421612] [2020-10-13 15:51:22,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:51:22,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 15:51:22,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948888061] [2020-10-13 15:51:22,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:51:22,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:22,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:51:22,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:22,077 INFO L87 Difference]: Start difference. First operand 3494 states and 5791 transitions. Second operand 7 states. [2020-10-13 15:51:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:24,073 INFO L93 Difference]: Finished difference Result 8049 states and 13331 transitions. [2020-10-13 15:51:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:51:24,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 15:51:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:24,106 INFO L225 Difference]: With dead ends: 8049 [2020-10-13 15:51:24,107 INFO L226 Difference]: Without dead ends: 4615 [2020-10-13 15:51:24,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-13 15:51:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2020-10-13 15:51:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 3622. [2020-10-13 15:51:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3622 states. [2020-10-13 15:51:24,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5868 transitions. [2020-10-13 15:51:24,525 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5868 transitions. Word has length 98 [2020-10-13 15:51:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:24,526 INFO L479 AbstractCegarLoop]: Abstraction has 3622 states and 5868 transitions. [2020-10-13 15:51:24,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:51:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5868 transitions. [2020-10-13 15:51:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:51:24,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:24,540 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:24,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:51:24,540 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:24,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1422770298, now seen corresponding path program 1 times [2020-10-13 15:51:24,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:24,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634684018] [2020-10-13 15:51:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:27,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:29,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:29,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 15:51:29,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:51:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:51:29,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:51:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:51:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:29,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:29,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:29,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:29,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:29,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:29,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:29,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:29,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:51:29,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:51:29,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 15:51:29,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:51:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:29,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:29,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:29,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:29,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:51:29,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:29,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:29,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:29,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:51:29,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 15:51:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:29,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:29,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 15:51:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:29,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:29,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:29,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:29,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 15:51:29,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634684018] [2020-10-13 15:51:29,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:51:29,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 15:51:29,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558856164] [2020-10-13 15:51:29,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 15:51:29,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:29,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 15:51:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 15:51:29,914 INFO L87 Difference]: Start difference. First operand 3622 states and 5868 transitions. Second operand 11 states. [2020-10-13 15:51:32,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:32,620 INFO L93 Difference]: Finished difference Result 15493 states and 26503 transitions. [2020-10-13 15:51:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 15:51:32,621 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 122 [2020-10-13 15:51:32,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:32,702 INFO L225 Difference]: With dead ends: 15493 [2020-10-13 15:51:32,702 INFO L226 Difference]: Without dead ends: 11931 [2020-10-13 15:51:32,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-10-13 15:51:32,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11931 states. [2020-10-13 15:51:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11931 to 8600. [2020-10-13 15:51:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8600 states. [2020-10-13 15:51:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8600 states to 8600 states and 14063 transitions. [2020-10-13 15:51:33,743 INFO L78 Accepts]: Start accepts. Automaton has 8600 states and 14063 transitions. Word has length 122 [2020-10-13 15:51:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:33,744 INFO L479 AbstractCegarLoop]: Abstraction has 8600 states and 14063 transitions. [2020-10-13 15:51:33,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 15:51:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8600 states and 14063 transitions. [2020-10-13 15:51:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:51:33,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:33,775 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:33,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:51:33,776 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash -951413948, now seen corresponding path program 1 times [2020-10-13 15:51:33,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:33,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765856977] [2020-10-13 15:51:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:38,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 15:51:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:51:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:51:38,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:51:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:51:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:38,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:38,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:38,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:38,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:38,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:51:38,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:38,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:51:38,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 15:51:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:39,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:39,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:39,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:39,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 15:51:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:39,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:39,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:39,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 15:51:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:39,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:39,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:51:39,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765856977] [2020-10-13 15:51:39,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:39,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:51:39,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877695213] [2020-10-13 15:51:39,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:51:39,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:39,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:51:39,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:39,073 INFO L87 Difference]: Start difference. First operand 8600 states and 14063 transitions. Second operand 7 states. [2020-10-13 15:51:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:41,052 INFO L93 Difference]: Finished difference Result 19303 states and 31617 transitions. [2020-10-13 15:51:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 15:51:41,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-13 15:51:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:41,114 INFO L225 Difference]: With dead ends: 19303 [2020-10-13 15:51:41,114 INFO L226 Difference]: Without dead ends: 10763 [2020-10-13 15:51:41,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-10-13 15:51:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2020-10-13 15:51:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 8556. [2020-10-13 15:51:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8556 states. [2020-10-13 15:51:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8556 states to 8556 states and 14006 transitions. [2020-10-13 15:51:41,925 INFO L78 Accepts]: Start accepts. Automaton has 8556 states and 14006 transitions. Word has length 122 [2020-10-13 15:51:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:41,925 INFO L479 AbstractCegarLoop]: Abstraction has 8556 states and 14006 transitions. [2020-10-13 15:51:41,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:51:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 8556 states and 14006 transitions. [2020-10-13 15:51:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:51:41,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:41,950 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:41,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:51:41,950 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:41,951 INFO L82 PathProgramCache]: Analyzing trace with hash 469003366, now seen corresponding path program 1 times [2020-10-13 15:51:41,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:41,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784837755] [2020-10-13 15:51:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:42,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:46,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:46,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 15:51:46,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:51:46,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:51:46,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:46,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 15:51:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:51:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:47,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:47,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:47,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:47,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:47,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:47,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:47,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:47,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:47,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:51:47,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:47,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:51:47,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:47,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:47,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:47,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:51:47,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:47,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:47,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:47,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:47,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:47,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:47,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:47,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:47,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:47,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:47,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:51:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:47,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:47,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:47,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:47,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:47,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:47,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:51:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 15:51:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:47,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:47,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:47,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:47,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:47,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:47,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 15:51:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:47,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:47,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:47,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:47,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:47,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:47,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:51:47,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784837755] [2020-10-13 15:51:47,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:47,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:51:47,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354883409] [2020-10-13 15:51:47,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:51:47,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:47,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:51:47,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:51:47,211 INFO L87 Difference]: Start difference. First operand 8556 states and 14006 transitions. Second operand 8 states. [2020-10-13 15:51:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:49,390 INFO L93 Difference]: Finished difference Result 21919 states and 36830 transitions. [2020-10-13 15:51:49,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 15:51:49,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-13 15:51:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:49,455 INFO L225 Difference]: With dead ends: 21919 [2020-10-13 15:51:49,455 INFO L226 Difference]: Without dead ends: 13423 [2020-10-13 15:51:49,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 15:51:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13423 states. [2020-10-13 15:51:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13423 to 8936. [2020-10-13 15:51:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8936 states. [2020-10-13 15:51:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8936 states to 8936 states and 14492 transitions. [2020-10-13 15:51:50,441 INFO L78 Accepts]: Start accepts. Automaton has 8936 states and 14492 transitions. Word has length 129 [2020-10-13 15:51:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:50,442 INFO L479 AbstractCegarLoop]: Abstraction has 8936 states and 14492 transitions. [2020-10-13 15:51:50,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:51:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8936 states and 14492 transitions. [2020-10-13 15:51:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:51:50,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:50,464 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:50,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:51:50,464 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1449838736, now seen corresponding path program 1 times [2020-10-13 15:51:50,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:50,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66353507] [2020-10-13 15:51:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:51,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:55,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 15:51:55,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:51:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:51:55,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 15:51:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:51:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:55,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:55,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:55,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:55,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:55,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:51:55,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:55,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:55,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:55,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:55,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:55,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:55,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:55,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:51:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:55,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:55,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:55,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:55,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 15:51:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:55,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:51:55,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 15:51:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:51:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 15:51:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:55,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:55,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:55,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:51:55,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66353507] [2020-10-13 15:51:55,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:51:55,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 15:51:55,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275974285] [2020-10-13 15:51:55,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:51:55,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:51:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:51:55,724 INFO L87 Difference]: Start difference. First operand 8936 states and 14492 transitions. Second operand 8 states. [2020-10-13 15:51:57,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:57,374 INFO L93 Difference]: Finished difference Result 21497 states and 35618 transitions. [2020-10-13 15:51:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 15:51:57,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-13 15:51:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:57,422 INFO L225 Difference]: With dead ends: 21497 [2020-10-13 15:51:57,422 INFO L226 Difference]: Without dead ends: 12865 [2020-10-13 15:51:57,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 15:51:57,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12865 states. [2020-10-13 15:51:58,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12865 to 8168. [2020-10-13 15:51:58,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8168 states. [2020-10-13 15:51:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 13052 transitions. [2020-10-13 15:51:58,222 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 13052 transitions. Word has length 131 [2020-10-13 15:51:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:58,223 INFO L479 AbstractCegarLoop]: Abstraction has 8168 states and 13052 transitions. [2020-10-13 15:51:58,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:51:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 13052 transitions. [2020-10-13 15:51:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 15:51:58,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:58,245 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:58,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:51:58,246 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:58,246 INFO L82 PathProgramCache]: Analyzing trace with hash 443948439, now seen corresponding path program 1 times [2020-10-13 15:51:58,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:58,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249869290] [2020-10-13 15:51:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:58,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:02,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:03,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 15:52:03,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:52:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:52:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:52:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 15:52:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:52:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:03,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:03,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:03,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:03,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:03,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:03,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:03,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:52:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:52:03,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:03,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:03,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:03,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:03,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:03,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:03,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:03,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:03,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:03,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:03,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 15:52:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:03,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:03,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:03,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:03,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:03,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:03,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 15:52:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:03,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:03,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:03,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:03,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:52:03,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249869290] [2020-10-13 15:52:03,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:52:03,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 15:52:03,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946018283] [2020-10-13 15:52:03,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:52:03,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:03,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:52:03,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:52:03,516 INFO L87 Difference]: Start difference. First operand 8168 states and 13052 transitions. Second operand 8 states. [2020-10-13 15:52:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:06,206 INFO L93 Difference]: Finished difference Result 25477 states and 42138 transitions. [2020-10-13 15:52:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 15:52:06,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-10-13 15:52:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:06,268 INFO L225 Difference]: With dead ends: 25477 [2020-10-13 15:52:06,268 INFO L226 Difference]: Without dead ends: 13745 [2020-10-13 15:52:06,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 15:52:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13745 states. [2020-10-13 15:52:07,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13745 to 6740. [2020-10-13 15:52:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6740 states. [2020-10-13 15:52:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6740 states to 6740 states and 10243 transitions. [2020-10-13 15:52:07,128 INFO L78 Accepts]: Start accepts. Automaton has 6740 states and 10243 transitions. Word has length 133 [2020-10-13 15:52:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:07,128 INFO L479 AbstractCegarLoop]: Abstraction has 6740 states and 10243 transitions. [2020-10-13 15:52:07,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:52:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 6740 states and 10243 transitions. [2020-10-13 15:52:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 15:52:07,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:07,140 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:07,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:52:07,140 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:07,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1548671018, now seen corresponding path program 1 times [2020-10-13 15:52:07,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:07,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331876231] [2020-10-13 15:52:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:12,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:12,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 15:52:12,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:52:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:52:12,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:52:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:52:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 15:52:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:12,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:12,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:12,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:52:12,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:52:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 15:52:12,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:52:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:52:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:52:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:12,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:12,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:12,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:12,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:52:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:12,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:12,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:52:12,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:52:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:52:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:52:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:12,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 15:52:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:12,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:12,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:12,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:12,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 15:52:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:12,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:12,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:12,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:12,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:12,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:12,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:52:12,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331876231] [2020-10-13 15:52:12,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:52:12,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 15:52:12,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434511838] [2020-10-13 15:52:12,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 15:52:12,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:12,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 15:52:12,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 15:52:12,534 INFO L87 Difference]: Start difference. First operand 6740 states and 10243 transitions. Second operand 11 states. [2020-10-13 15:52:20,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:20,966 INFO L93 Difference]: Finished difference Result 43149 states and 71363 transitions. [2020-10-13 15:52:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 15:52:20,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 132 [2020-10-13 15:52:20,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:21,176 INFO L225 Difference]: With dead ends: 43149 [2020-10-13 15:52:21,176 INFO L226 Difference]: Without dead ends: 36505 [2020-10-13 15:52:21,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=276, Invalid=914, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 15:52:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36505 states. [2020-10-13 15:52:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36505 to 24160. [2020-10-13 15:52:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24160 states. [2020-10-13 15:52:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24160 states to 24160 states and 38276 transitions. [2020-10-13 15:52:24,087 INFO L78 Accepts]: Start accepts. Automaton has 24160 states and 38276 transitions. Word has length 132 [2020-10-13 15:52:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:24,088 INFO L479 AbstractCegarLoop]: Abstraction has 24160 states and 38276 transitions. [2020-10-13 15:52:24,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 15:52:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 24160 states and 38276 transitions. [2020-10-13 15:52:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 15:52:24,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:24,127 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:24,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:52:24,127 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:24,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:24,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1653661076, now seen corresponding path program 1 times [2020-10-13 15:52:24,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:24,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282536611] [2020-10-13 15:52:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:29,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:29,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 15:52:29,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:52:29,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4962 [2020-10-13 15:52:29,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:52:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:52:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:29,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:29,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:29,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:29,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:52:29,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:29,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:29,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:29,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:29,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:52:29,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:52:29,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:52:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:29,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:29,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:29,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:29,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:29,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:29,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:29,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:29,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:29,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:29,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:29,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:29,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:29,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:29,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 15:52:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:29,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:29,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:29,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:52:29,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 15:52:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:29,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:29,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:29,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:29,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:52:29,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282536611] [2020-10-13 15:52:29,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:52:29,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:52:29,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275910719] [2020-10-13 15:52:29,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:52:29,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:29,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:52:29,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:52:29,360 INFO L87 Difference]: Start difference. First operand 24160 states and 38276 transitions. Second operand 8 states. [2020-10-13 15:52:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:33,474 INFO L93 Difference]: Finished difference Result 56481 states and 90377 transitions. [2020-10-13 15:52:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:52:33,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-10-13 15:52:33,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:33,618 INFO L225 Difference]: With dead ends: 56481 [2020-10-13 15:52:33,618 INFO L226 Difference]: Without dead ends: 32417 [2020-10-13 15:52:33,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-13 15:52:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32417 states. [2020-10-13 15:52:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32417 to 23722. [2020-10-13 15:52:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23722 states. [2020-10-13 15:52:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23722 states to 23722 states and 37595 transitions. [2020-10-13 15:52:35,987 INFO L78 Accepts]: Start accepts. Automaton has 23722 states and 37595 transitions. Word has length 132 [2020-10-13 15:52:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:35,987 INFO L479 AbstractCegarLoop]: Abstraction has 23722 states and 37595 transitions. [2020-10-13 15:52:35,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:52:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 23722 states and 37595 transitions. [2020-10-13 15:52:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 15:52:36,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:36,017 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:36,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:52:36,017 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:36,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:36,018 INFO L82 PathProgramCache]: Analyzing trace with hash -342446363, now seen corresponding path program 1 times [2020-10-13 15:52:36,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:36,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523758051] [2020-10-13 15:52:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:36,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:36,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:36,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:40,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:40,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 15:52:41,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:52:41,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 15:52:41,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:52:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:52:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:52:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:41,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 15:52:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 15:52:41,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:52:41,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 15:52:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:41,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:41,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:41,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:41,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:41,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 15:52:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:41,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:41,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:41,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 15:52:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:41,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:41,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 15:52:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:41,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:41,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:52:41,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523758051] [2020-10-13 15:52:41,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:52:41,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:52:41,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724872085] [2020-10-13 15:52:41,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:52:41,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:41,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:52:41,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:52:41,361 INFO L87 Difference]: Start difference. First operand 23722 states and 37595 transitions. Second operand 9 states. [2020-10-13 15:52:46,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:46,595 INFO L93 Difference]: Finished difference Result 58576 states and 94623 transitions. [2020-10-13 15:52:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 15:52:46,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-10-13 15:52:46,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:46,717 INFO L225 Difference]: With dead ends: 58576 [2020-10-13 15:52:46,717 INFO L226 Difference]: Without dead ends: 35268 [2020-10-13 15:52:46,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-10-13 15:52:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35268 states. [2020-10-13 15:52:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35268 to 23770. [2020-10-13 15:52:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23770 states. [2020-10-13 15:52:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23770 states to 23770 states and 37695 transitions. [2020-10-13 15:52:49,460 INFO L78 Accepts]: Start accepts. Automaton has 23770 states and 37695 transitions. Word has length 142 [2020-10-13 15:52:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:49,460 INFO L479 AbstractCegarLoop]: Abstraction has 23770 states and 37695 transitions. [2020-10-13 15:52:49,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:52:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 23770 states and 37695 transitions. [2020-10-13 15:52:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 15:52:49,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:49,505 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:49,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:52:49,505 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:49,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:49,506 INFO L82 PathProgramCache]: Analyzing trace with hash -900702872, now seen corresponding path program 1 times [2020-10-13 15:52:49,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:49,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765541594] [2020-10-13 15:52:49,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:49,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:53,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:53,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 15:52:53,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:52:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4081 [2020-10-13 15:52:53,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 15:52:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:52:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:53,905 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 15:52:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:53,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:53,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:53,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:53,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:53,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:53,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:53,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:53,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 15:52:53,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:52:53,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:52:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:54,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:54,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:54,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:54,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:54,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:54,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:54,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:54,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:54,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 15:52:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:54,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:54,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:54,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:54,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:52:54,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 15:52:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:54,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:54,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:54,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:54,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 15:52:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:54,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:54,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:54,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:54,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:54,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:54,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:52:54,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765541594] [2020-10-13 15:52:54,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:52:54,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:52:54,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537856189] [2020-10-13 15:52:54,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:52:54,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:54,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:52:54,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:52:54,104 INFO L87 Difference]: Start difference. First operand 23770 states and 37695 transitions. Second operand 9 states. [2020-10-13 15:53:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:53:00,067 INFO L93 Difference]: Finished difference Result 57782 states and 95633 transitions. [2020-10-13 15:53:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 15:53:00,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-10-13 15:53:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:53:00,202 INFO L225 Difference]: With dead ends: 57782 [2020-10-13 15:53:00,202 INFO L226 Difference]: Without dead ends: 34078 [2020-10-13 15:53:00,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-13 15:53:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34078 states. [2020-10-13 15:53:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34078 to 24136. [2020-10-13 15:53:04,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24136 states. [2020-10-13 15:53:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24136 states to 24136 states and 37597 transitions. [2020-10-13 15:53:04,155 INFO L78 Accepts]: Start accepts. Automaton has 24136 states and 37597 transitions. Word has length 139 [2020-10-13 15:53:04,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:04,155 INFO L479 AbstractCegarLoop]: Abstraction has 24136 states and 37597 transitions. [2020-10-13 15:53:04,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:53:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 24136 states and 37597 transitions. [2020-10-13 15:53:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 15:53:04,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:04,181 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:04,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:53:04,181 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:04,182 INFO L82 PathProgramCache]: Analyzing trace with hash -524315, now seen corresponding path program 1 times [2020-10-13 15:53:04,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:04,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731618812] [2020-10-13 15:53:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:06,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 15:53:06,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:53:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2099 [2020-10-13 15:53:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:53:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 15:53:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 15:53:06,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:06,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:06,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:53:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 15:53:06,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:53:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 15:53:06,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:53:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:53:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 15:53:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:53:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:06,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:06,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:53:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:53:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:53:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:53:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:06,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:53:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:06,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:06,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:06,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:53:06,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 15:53:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:06,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:06,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:06,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:53:06,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:06,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 15:53:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:06,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:53:06,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:06,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:53:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:06,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 15:53:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:06,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:06,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:06,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:06,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:06,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:06,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 15:53:06,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731618812] [2020-10-13 15:53:06,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:53:06,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 15:53:06,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69488636] [2020-10-13 15:53:06,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 15:53:06,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:06,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 15:53:06,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 15:53:06,630 INFO L87 Difference]: Start difference. First operand 24136 states and 37597 transitions. Second operand 11 states. [2020-10-13 15:53:20,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:53:20,070 INFO L93 Difference]: Finished difference Result 132370 states and 219081 transitions. [2020-10-13 15:53:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-13 15:53:20,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2020-10-13 15:53:20,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:53:20,438 INFO L225 Difference]: With dead ends: 132370 [2020-10-13 15:53:20,439 INFO L226 Difference]: Without dead ends: 108320 [2020-10-13 15:53:20,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=463, Invalid=2087, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 15:53:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108320 states. [2020-10-13 15:53:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108320 to 73626. [2020-10-13 15:53:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73626 states. [2020-10-13 15:53:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73626 states to 73626 states and 116777 transitions. [2020-10-13 15:53:29,010 INFO L78 Accepts]: Start accepts. Automaton has 73626 states and 116777 transitions. Word has length 140 [2020-10-13 15:53:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:29,010 INFO L479 AbstractCegarLoop]: Abstraction has 73626 states and 116777 transitions. [2020-10-13 15:53:29,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 15:53:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 73626 states and 116777 transitions. [2020-10-13 15:53:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 15:53:29,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:29,072 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:29,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:53:29,072 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:29,072 INFO L82 PathProgramCache]: Analyzing trace with hash 237946650, now seen corresponding path program 1 times [2020-10-13 15:53:29,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:29,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713352125] [2020-10-13 15:53:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 15:53:30,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:53:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-13 15:53:30,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 15:53:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:53:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:53:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 15:53:30,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:30,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:53:30,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:53:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:53:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:30,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:30,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:53:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:30,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:30,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:30,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:30,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:30,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:30,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 15:53:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:30,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:53:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 15:53:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:30,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:30,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:30,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:30,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:53:30,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 15:53:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:30,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:53:30,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:53:30,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:53:30,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 15:53:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:30,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:30,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:30,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:30,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:30,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:53:30,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713352125] [2020-10-13 15:53:30,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:53:30,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:53:30,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118997330] [2020-10-13 15:53:30,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:53:30,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:30,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:53:30,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:53:30,326 INFO L87 Difference]: Start difference. First operand 73626 states and 116777 transitions. Second operand 10 states. [2020-10-13 15:53:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:53:45,075 INFO L93 Difference]: Finished difference Result 168694 states and 273771 transitions. [2020-10-13 15:53:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 15:53:45,075 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-10-13 15:53:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:53:45,354 INFO L225 Difference]: With dead ends: 168694 [2020-10-13 15:53:45,354 INFO L226 Difference]: Without dead ends: 95154 [2020-10-13 15:53:45,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 15:53:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95154 states. [2020-10-13 15:53:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95154 to 68960. [2020-10-13 15:53:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68960 states. [2020-10-13 15:53:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68960 states to 68960 states and 107267 transitions. [2020-10-13 15:53:54,600 INFO L78 Accepts]: Start accepts. Automaton has 68960 states and 107267 transitions. Word has length 147 [2020-10-13 15:53:54,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:54,601 INFO L479 AbstractCegarLoop]: Abstraction has 68960 states and 107267 transitions. [2020-10-13 15:53:54,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:53:54,601 INFO L276 IsEmpty]: Start isEmpty. Operand 68960 states and 107267 transitions. [2020-10-13 15:53:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 15:53:54,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:54,671 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:54,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:53:54,672 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:54,672 INFO L82 PathProgramCache]: Analyzing trace with hash 786464046, now seen corresponding path program 1 times [2020-10-13 15:53:54,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:54,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739683908] [2020-10-13 15:53:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:54,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 15:53:59,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:53:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:53:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:53:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:53:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:53:59,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:59,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:59,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 15:53:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 15:53:59,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:53:59,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 15:53:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:59,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:53:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:59,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:59,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:59,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:53:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:59,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:59,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:59,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 15:53:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:59,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:53:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:59,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:59,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 15:53:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 15:53:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:59,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:59,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:53:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-13 15:53:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:59,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:59,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:59,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:59,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:53:59,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739683908] [2020-10-13 15:53:59,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:53:59,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:53:59,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181813006] [2020-10-13 15:53:59,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:53:59,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:53:59,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:53:59,984 INFO L87 Difference]: Start difference. First operand 68960 states and 107267 transitions. Second operand 10 states.