/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/forester-heap/dll-reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:20:25,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:20:25,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:20:25,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:20:25,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:20:25,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:20:25,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:20:25,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:20:25,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:20:25,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:20:25,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:20:25,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:20:25,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:20:25,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:20:25,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:20:25,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:20:25,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:20:25,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:20:25,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:20:25,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:20:25,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:20:25,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:20:25,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:20:25,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:20:25,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:20:25,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:20:25,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:20:25,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:20:25,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:20:25,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:20:25,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:20:25,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:20:25,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:20:25,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:20:25,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:20:25,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:20:25,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:20:25,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:20:25,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:20:25,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:20:25,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:20:25,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:20:25,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:20:25,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:20:25,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:20:25,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:20:25,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:20:25,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:20:25,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:20:25,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:20:25,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:20:25,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:20:25,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:20:25,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:20:25,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:20:25,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:20:25,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:20:25,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:20:25,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:20:25,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:20:25,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:20:25,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:20:25,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:20:25,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:25,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:20:25,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:20:25,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:20:25,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:20:25,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:20:25,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:20:25,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:20:25,448 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:20:25,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:20:25,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:20:25,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:20:25,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:20:25,794 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:20:25,794 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-reverse.i [2020-10-14 23:20:25,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a4d97058/5beed8de7c5944c7a483cc53c95b7271/FLAGd2517fde1 [2020-10-14 23:20:26,407 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:20:26,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-reverse.i [2020-10-14 23:20:26,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a4d97058/5beed8de7c5944c7a483cc53c95b7271/FLAGd2517fde1 [2020-10-14 23:20:26,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a4d97058/5beed8de7c5944c7a483cc53c95b7271 [2020-10-14 23:20:26,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:20:26,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:20:26,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:26,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:20:26,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:20:26,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477a51da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26, skipping insertion in model container [2020-10-14 23:20:26,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:20:26,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:20:27,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:27,257 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:20:27,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:27,373 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:20:27,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27 WrapperNode [2020-10-14 23:20:27,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:27,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:20:27,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:20:27,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:20:27,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:20:27,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:20:27,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:20:27,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:20:27,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:27,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:20:27,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:20:27,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:20:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:20:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:20:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:20:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:20:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:20:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:20:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:20:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:20:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:20:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:20:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:20:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:20:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:20:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:20:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:20:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:20:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:20:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:20:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:20:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:20:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:20:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:20:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:20:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:20:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:20:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:20:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:20:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:20:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:20:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:20:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:20:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:20:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:20:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:20:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:20:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:20:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:20:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:20:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:20:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:20:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:20:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:20:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:20:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:20:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:20:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:20:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:20:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:20:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:20:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:20:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:20:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:20:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:20:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:20:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:20:27,546 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:20:27,546 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:20:27,546 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:20:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:20:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:20:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:20:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:20:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:20:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:20:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:20:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:20:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:20:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:20:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:20:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:20:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:20:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:20:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:20:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:20:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:20:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:20:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:20:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:20:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:20:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:20:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:20:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:20:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:20:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:20:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:20:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:20:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:20:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:20:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:20:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:20:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:20:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:20:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:20:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:20:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:20:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:20:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:20:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:20:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:20:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:20:28,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:20:28,201 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 23:20:28,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:28 BoogieIcfgContainer [2020-10-14 23:20:28,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:20:28,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:20:28,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:20:28,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:20:28,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:26" (1/3) ... [2020-10-14 23:20:28,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab603c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:28, skipping insertion in model container [2020-10-14 23:20:28,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (2/3) ... [2020-10-14 23:20:28,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab603c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:28, skipping insertion in model container [2020-10-14 23:20:28,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:28" (3/3) ... [2020-10-14 23:20:28,214 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-reverse.i [2020-10-14 23:20:28,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:20:28,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-14 23:20:28,247 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-14 23:20:28,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:20:28,267 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:20:28,267 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:20:28,267 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:20:28,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:20:28,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:20:28,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:20:28,268 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:20:28,288 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-14 23:20:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 23:20:28,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:28,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:28,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:28,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993325, now seen corresponding path program 1 times [2020-10-14 23:20:28,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:28,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094893499] [2020-10-14 23:20:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:28,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:28,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:20:28,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:20:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-14 23:20:28,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:28,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:20:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:20:28,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:20:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:28,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:20:28,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:28,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:28,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094893499] [2020-10-14 23:20:28,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:28,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:28,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328001185] [2020-10-14 23:20:28,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:28,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:28,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:28,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:28,887 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2020-10-14 23:20:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:29,161 INFO L93 Difference]: Finished difference Result 88 states and 142 transitions. [2020-10-14 23:20:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:20:29,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-14 23:20:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:29,174 INFO L225 Difference]: With dead ends: 88 [2020-10-14 23:20:29,175 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 23:20:29,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 23:20:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-14 23:20:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:20:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-14 23:20:29,226 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 11 [2020-10-14 23:20:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:29,226 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-14 23:20:29,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-14 23:20:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:20:29,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:29,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:29,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:20:29,229 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:29,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1409287098, now seen corresponding path program 1 times [2020-10-14 23:20:29,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:29,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405611601] [2020-10-14 23:20:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:29,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:20:29,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 23:20:29,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:29,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:20:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:20:29,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:29,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:29,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:29,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:20:29,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:29,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:29,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:29,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:29,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405611601] [2020-10-14 23:20:29,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:29,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:20:29,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722400266] [2020-10-14 23:20:29,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:29,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:29,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:29,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:29,766 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 6 states. [2020-10-14 23:20:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:30,069 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-10-14 23:20:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:20:30,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-14 23:20:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:30,073 INFO L225 Difference]: With dead ends: 49 [2020-10-14 23:20:30,073 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 23:20:30,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 23:20:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2020-10-14 23:20:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:20:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-14 23:20:30,083 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 20 [2020-10-14 23:20:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:30,084 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-14 23:20:30,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-14 23:20:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:20:30,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:30,085 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] [2020-10-14 23:20:30,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:20:30,086 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:30,086 INFO L82 PathProgramCache]: Analyzing trace with hash -66986961, now seen corresponding path program 1 times [2020-10-14 23:20:30,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:30,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818183131] [2020-10-14 23:20:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:30,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:31,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:31,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:20:31,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:20:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-14 23:20:31,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:31,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:20:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:20:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:31,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:31,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:31,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:31,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:31,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818183131] [2020-10-14 23:20:31,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:31,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:20:31,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978900795] [2020-10-14 23:20:31,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:20:31,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:31,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:20:31,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:31,519 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 11 states. [2020-10-14 23:20:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:32,098 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2020-10-14 23:20:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:20:32,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-14 23:20:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:32,100 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:20:32,100 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:20:32,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:20:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:20:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2020-10-14 23:20:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:20:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-14 23:20:32,110 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2020-10-14 23:20:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:32,110 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-14 23:20:32,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:20:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-14 23:20:32,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:20:32,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:32,111 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] [2020-10-14 23:20:32,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:20:32,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:32,112 INFO L82 PathProgramCache]: Analyzing trace with hash 613071409, now seen corresponding path program 1 times [2020-10-14 23:20:32,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:32,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852883006] [2020-10-14 23:20:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:32,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:32,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:20:32,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:20:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-14 23:20:32,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:32,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:20:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:20:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:20:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:32,905 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-10-14 23:20:33,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:33,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:33,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:33,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:33,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:33,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:33,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:33,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852883006] [2020-10-14 23:20:33,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:33,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:20:33,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981058471] [2020-10-14 23:20:33,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:20:33,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:33,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:20:33,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:33,027 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-10-14 23:20:33,397 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-14 23:20:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:33,914 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2020-10-14 23:20:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:20:33,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-14 23:20:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:33,916 INFO L225 Difference]: With dead ends: 99 [2020-10-14 23:20:33,916 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 23:20:33,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:20:33,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 23:20:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 46. [2020-10-14 23:20:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:20:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-14 23:20:33,925 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2020-10-14 23:20:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:33,926 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-14 23:20:33,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:20:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-14 23:20:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:20:33,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:33,927 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:33,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:20:33,928 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:33,928 INFO L82 PathProgramCache]: Analyzing trace with hash -481772003, now seen corresponding path program 2 times [2020-10-14 23:20:33,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:33,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638550754] [2020-10-14 23:20:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:34,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:34,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:34,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:34,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:20:34,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:20:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-14 23:20:34,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:34,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:20:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:20:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:34,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:34,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:34,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:34,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:34,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:34,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:34,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:34,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:34,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638550754] [2020-10-14 23:20:34,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:34,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:20:34,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386931647] [2020-10-14 23:20:34,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:20:34,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:34,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:20:34,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:20:34,832 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 12 states. [2020-10-14 23:20:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:35,519 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2020-10-14 23:20:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:20:35,520 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-14 23:20:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:35,522 INFO L225 Difference]: With dead ends: 85 [2020-10-14 23:20:35,522 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 23:20:35,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:20:35,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 23:20:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 53. [2020-10-14 23:20:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:20:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2020-10-14 23:20:35,542 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 25 [2020-10-14 23:20:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:35,542 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2020-10-14 23:20:35,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:20:35,542 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2020-10-14 23:20:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:20:35,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:35,544 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:35,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:20:35,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:35,545 INFO L82 PathProgramCache]: Analyzing trace with hash -481770081, now seen corresponding path program 1 times [2020-10-14 23:20:35,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:35,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822508760] [2020-10-14 23:20:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:35,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:36,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:36,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:20:36,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:20:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-14 23:20:36,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:36,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:20:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:20:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:36,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:36,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:36,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:36,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:36,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:36,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:36,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:36,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822508760] [2020-10-14 23:20:36,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:36,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:20:36,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835186310] [2020-10-14 23:20:36,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:20:36,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:36,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:20:36,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:20:36,581 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand 10 states. [2020-10-14 23:20:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:37,135 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-10-14 23:20:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:20:37,136 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-14 23:20:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:37,137 INFO L225 Difference]: With dead ends: 96 [2020-10-14 23:20:37,137 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 23:20:37,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:20:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 23:20:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 53. [2020-10-14 23:20:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:20:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2020-10-14 23:20:37,148 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 25 [2020-10-14 23:20:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:37,148 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2020-10-14 23:20:37,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:20:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2020-10-14 23:20:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:20:37,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:37,150 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:37,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:20:37,150 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:37,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:37,151 INFO L82 PathProgramCache]: Analyzing trace with hash -874799013, now seen corresponding path program 2 times [2020-10-14 23:20:37,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:37,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39594290] [2020-10-14 23:20:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:37,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:37,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:20:37,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 23:20:37,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:37,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:20:37,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:37,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:20:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:20:37,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39594290] [2020-10-14 23:20:37,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:37,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:37,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387744216] [2020-10-14 23:20:37,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:37,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:37,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:37,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:37,484 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand 6 states. [2020-10-14 23:20:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:37,726 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2020-10-14 23:20:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:20:37,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-14 23:20:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:37,727 INFO L225 Difference]: With dead ends: 94 [2020-10-14 23:20:37,727 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 23:20:37,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 23:20:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2020-10-14 23:20:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:20:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2020-10-14 23:20:37,736 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 25 [2020-10-14 23:20:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:37,737 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2020-10-14 23:20:37,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2020-10-14 23:20:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:20:37,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:37,738 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:37,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:20:37,739 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:37,739 INFO L82 PathProgramCache]: Analyzing trace with hash -455206417, now seen corresponding path program 3 times [2020-10-14 23:20:37,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:37,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819959816] [2020-10-14 23:20:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:38,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:38,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:20:38,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:20:38,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-14 23:20:38,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:38,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:20:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:20:38,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:38,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:38,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:38,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:38,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:38,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:38,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:38,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819959816] [2020-10-14 23:20:38,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:38,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:20:38,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445215721] [2020-10-14 23:20:38,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:20:38,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:38,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:20:38,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:38,576 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand 9 states. [2020-10-14 23:20:39,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:39,439 INFO L93 Difference]: Finished difference Result 131 states and 166 transitions. [2020-10-14 23:20:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:20:39,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-14 23:20:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:39,440 INFO L225 Difference]: With dead ends: 131 [2020-10-14 23:20:39,441 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 23:20:39,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:20:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 23:20:39,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-10-14 23:20:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 23:20:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2020-10-14 23:20:39,457 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 26 [2020-10-14 23:20:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:39,458 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2020-10-14 23:20:39,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:20:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2020-10-14 23:20:39,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:20:39,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:39,463 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:20:39,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:20:39,463 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:39,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:39,464 INFO L82 PathProgramCache]: Analyzing trace with hash 118595862, now seen corresponding path program 1 times [2020-10-14 23:20:39,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:39,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131922665] [2020-10-14 23:20:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:39,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:39,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:39,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:20:39,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-14 23:20:39,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:39,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:20:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:20:39,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:40,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:40,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:40,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:20:40,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:40,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:40,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131922665] [2020-10-14 23:20:40,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:40,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:20:40,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786270768] [2020-10-14 23:20:40,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:20:40,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:40,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:20:40,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:20:40,179 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand 13 states. [2020-10-14 23:20:40,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:40,853 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2020-10-14 23:20:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:20:40,853 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-14 23:20:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:40,855 INFO L225 Difference]: With dead ends: 124 [2020-10-14 23:20:40,855 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 23:20:40,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:20:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 23:20:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2020-10-14 23:20:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 23:20:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2020-10-14 23:20:40,866 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 27 [2020-10-14 23:20:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:40,866 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2020-10-14 23:20:40,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:20:40,866 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2020-10-14 23:20:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:20:40,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:40,867 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:20:40,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:20:40,868 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:40,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:40,868 INFO L82 PathProgramCache]: Analyzing trace with hash 118597784, now seen corresponding path program 1 times [2020-10-14 23:20:40,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:40,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680409788] [2020-10-14 23:20:40,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:41,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:20:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-14 23:20:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:41,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:20:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:20:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:41,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:41,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:41,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:41,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:41,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:41,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:41,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680409788] [2020-10-14 23:20:41,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:41,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:20:41,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706256812] [2020-10-14 23:20:41,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:20:41,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:41,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:20:41,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:20:41,588 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand 12 states. [2020-10-14 23:20:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:42,337 INFO L93 Difference]: Finished difference Result 135 states and 167 transitions. [2020-10-14 23:20:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:20:42,339 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-14 23:20:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:42,341 INFO L225 Difference]: With dead ends: 135 [2020-10-14 23:20:42,341 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:20:42,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:20:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:20:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 80. [2020-10-14 23:20:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 23:20:42,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-10-14 23:20:42,350 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 27 [2020-10-14 23:20:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:42,351 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-10-14 23:20:42,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:20:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-10-14 23:20:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:20:42,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:42,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:42,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:20:42,352 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:42,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:42,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1416587397, now seen corresponding path program 2 times [2020-10-14 23:20:42,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:42,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78995939] [2020-10-14 23:20:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:44,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:44,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:20:44,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1644 [2020-10-14 23:20:44,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:44,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:20:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:20:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:44,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:44,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:44,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:44,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:44,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:44,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-14 23:20:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:44,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78995939] [2020-10-14 23:20:44,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:44,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:20:44,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740684949] [2020-10-14 23:20:44,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:20:44,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:44,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:20:44,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:20:44,462 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 13 states. [2020-10-14 23:20:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:45,862 INFO L93 Difference]: Finished difference Result 162 states and 203 transitions. [2020-10-14 23:20:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:20:45,862 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-14 23:20:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:45,864 INFO L225 Difference]: With dead ends: 162 [2020-10-14 23:20:45,865 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 23:20:45,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:20:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 23:20:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 95. [2020-10-14 23:20:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 23:20:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 122 transitions. [2020-10-14 23:20:45,876 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 122 transitions. Word has length 30 [2020-10-14 23:20:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:45,877 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 122 transitions. [2020-10-14 23:20:45,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:20:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 122 transitions. [2020-10-14 23:20:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:20:45,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:45,878 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:45,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:20:45,879 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:45,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:45,879 INFO L82 PathProgramCache]: Analyzing trace with hash 215847921, now seen corresponding path program 1 times [2020-10-14 23:20:45,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:45,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079797039] [2020-10-14 23:20:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:46,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:48,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:48,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:20:48,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:20:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3001 [2020-10-14 23:20:48,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:48,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:20:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:20:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:48,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:48,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:48,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:48,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:20:48,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:48,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:49,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079797039] [2020-10-14 23:20:49,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:49,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:20:49,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690512742] [2020-10-14 23:20:49,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:20:49,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:20:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:20:49,006 INFO L87 Difference]: Start difference. First operand 95 states and 122 transitions. Second operand 10 states. [2020-10-14 23:20:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:49,411 INFO L93 Difference]: Finished difference Result 127 states and 160 transitions. [2020-10-14 23:20:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:20:49,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-14 23:20:49,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:49,412 INFO L225 Difference]: With dead ends: 127 [2020-10-14 23:20:49,413 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 23:20:49,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:20:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 23:20:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2020-10-14 23:20:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 23:20:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2020-10-14 23:20:49,427 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 31 [2020-10-14 23:20:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:49,428 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2020-10-14 23:20:49,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:20:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2020-10-14 23:20:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:20:49,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:49,429 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:49,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:20:49,429 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:49,430 INFO L82 PathProgramCache]: Analyzing trace with hash 273106223, now seen corresponding path program 1 times [2020-10-14 23:20:49,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:49,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439367480] [2020-10-14 23:20:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:50,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:50,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:20:50,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:20:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-14 23:20:50,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:50,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:20:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:20:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:20:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:50,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:50,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:50,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:50,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:20:50,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:50,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:50,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:50,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439367480] [2020-10-14 23:20:50,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:50,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:20:50,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604514821] [2020-10-14 23:20:50,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:20:50,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:50,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:20:50,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:20:50,795 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand 7 states. [2020-10-14 23:20:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:51,063 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2020-10-14 23:20:51,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:20:51,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-14 23:20:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:51,065 INFO L225 Difference]: With dead ends: 141 [2020-10-14 23:20:51,065 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 23:20:51,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 23:20:51,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2020-10-14 23:20:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 23:20:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 140 transitions. [2020-10-14 23:20:51,077 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 140 transitions. Word has length 31 [2020-10-14 23:20:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:51,078 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 140 transitions. [2020-10-14 23:20:51,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:20:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 140 transitions. [2020-10-14 23:20:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:20:51,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:51,079 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:51,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:20:51,080 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:51,080 INFO L82 PathProgramCache]: Analyzing trace with hash 630287441, now seen corresponding path program 3 times [2020-10-14 23:20:51,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:51,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260315005] [2020-10-14 23:20:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:51,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:51,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:20:51,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-14 23:20:51,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:51,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:20:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:20:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:52,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:52,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:52,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:52,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:20:52,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:52,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:52,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260315005] [2020-10-14 23:20:52,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:52,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:20:52,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540486781] [2020-10-14 23:20:52,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:20:52,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:52,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:20:52,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:20:52,255 INFO L87 Difference]: Start difference. First operand 110 states and 140 transitions. Second operand 13 states. [2020-10-14 23:20:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:53,756 INFO L93 Difference]: Finished difference Result 181 states and 228 transitions. [2020-10-14 23:20:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:20:53,757 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-14 23:20:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:53,759 INFO L225 Difference]: With dead ends: 181 [2020-10-14 23:20:53,759 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 23:20:53,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:20:53,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 23:20:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2020-10-14 23:20:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 23:20:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2020-10-14 23:20:53,781 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 31 [2020-10-14 23:20:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:53,783 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 147 transitions. [2020-10-14 23:20:53,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:20:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 147 transitions. [2020-10-14 23:20:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:20:53,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:53,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:53,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:20:53,786 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:53,786 INFO L82 PathProgramCache]: Analyzing trace with hash 504129541, now seen corresponding path program 1 times [2020-10-14 23:20:53,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:53,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110605590] [2020-10-14 23:20:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:56,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:58,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:58,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:20:58,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 23:20:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 23:20:58,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:58,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:20:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:20:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:58,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:58,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:58,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:58,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:58,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:58,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110605590] [2020-10-14 23:20:58,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:58,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:20:58,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967069052] [2020-10-14 23:20:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:20:58,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:58,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:20:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:20:58,958 INFO L87 Difference]: Start difference. First operand 116 states and 147 transitions. Second operand 12 states. [2020-10-14 23:20:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:59,781 INFO L93 Difference]: Finished difference Result 170 states and 210 transitions. [2020-10-14 23:20:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:20:59,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-14 23:20:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:59,783 INFO L225 Difference]: With dead ends: 170 [2020-10-14 23:20:59,783 INFO L226 Difference]: Without dead ends: 159 [2020-10-14 23:20:59,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:20:59,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-14 23:20:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 121. [2020-10-14 23:20:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 23:20:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 152 transitions. [2020-10-14 23:20:59,801 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 152 transitions. Word has length 32 [2020-10-14 23:20:59,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:59,802 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 152 transitions. [2020-10-14 23:20:59,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:20:59,802 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 152 transitions. [2020-10-14 23:20:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:20:59,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:59,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:59,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:20:59,803 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:59,804 INFO L82 PathProgramCache]: Analyzing trace with hash 561387843, now seen corresponding path program 1 times [2020-10-14 23:20:59,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:59,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627636275] [2020-10-14 23:20:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:59,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:59,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:02,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:02,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:21:02,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:21:02,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3001 [2020-10-14 23:21:02,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:02,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:02,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:21:02,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:03,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:03,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:03,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:03,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:03,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:03,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627636275] [2020-10-14 23:21:03,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:03,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:03,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991343105] [2020-10-14 23:21:03,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:03,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:03,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:03,017 INFO L87 Difference]: Start difference. First operand 121 states and 152 transitions. Second operand 11 states. [2020-10-14 23:21:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:03,566 INFO L93 Difference]: Finished difference Result 152 states and 187 transitions. [2020-10-14 23:21:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:21:03,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 23:21:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:03,568 INFO L225 Difference]: With dead ends: 152 [2020-10-14 23:21:03,569 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 23:21:03,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 23:21:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2020-10-14 23:21:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 23:21:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2020-10-14 23:21:03,587 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 32 [2020-10-14 23:21:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:03,587 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2020-10-14 23:21:03,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2020-10-14 23:21:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:21:03,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:03,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:03,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:21:03,590 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:03,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1945173470, now seen corresponding path program 1 times [2020-10-14 23:21:03,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:03,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797302492] [2020-10-14 23:21:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:04,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:05,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:06,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:06,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:21:06,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:21:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2473 [2020-10-14 23:21:06,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:06,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:21:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:06,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:06,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:06,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:06,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:06,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:06,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:06,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:06,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797302492] [2020-10-14 23:21:06,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:06,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:21:06,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473982327] [2020-10-14 23:21:06,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:21:06,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:06,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:21:06,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:21:06,215 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand 10 states. [2020-10-14 23:21:06,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:06,631 INFO L93 Difference]: Finished difference Result 149 states and 184 transitions. [2020-10-14 23:21:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:06,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:21:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:06,632 INFO L225 Difference]: With dead ends: 149 [2020-10-14 23:21:06,632 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 23:21:06,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 23:21:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2020-10-14 23:21:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 23:21:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 152 transitions. [2020-10-14 23:21:06,645 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 152 transitions. Word has length 32 [2020-10-14 23:21:06,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:06,645 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 152 transitions. [2020-10-14 23:21:06,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:21:06,645 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 152 transitions. [2020-10-14 23:21:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:21:06,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:06,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:06,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:21:06,647 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:06,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:06,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1265115100, now seen corresponding path program 1 times [2020-10-14 23:21:06,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:06,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549262784] [2020-10-14 23:21:06,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:06,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:06,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:06,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:06,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:21:06,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 23:21:06,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:06,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:21:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:21:06,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:07,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:07,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:07,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:21:07,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549262784] [2020-10-14 23:21:07,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:07,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:21:07,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600283724] [2020-10-14 23:21:07,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:21:07,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:07,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:21:07,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:07,077 INFO L87 Difference]: Start difference. First operand 125 states and 152 transitions. Second operand 8 states. [2020-10-14 23:21:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:07,528 INFO L93 Difference]: Finished difference Result 151 states and 185 transitions. [2020-10-14 23:21:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:07,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-14 23:21:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:07,530 INFO L225 Difference]: With dead ends: 151 [2020-10-14 23:21:07,530 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 23:21:07,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:07,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 23:21:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-14 23:21:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 23:21:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2020-10-14 23:21:07,543 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 32 [2020-10-14 23:21:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:07,544 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2020-10-14 23:21:07,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:21:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2020-10-14 23:21:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:21:07,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:07,545 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:07,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:21:07,545 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1093981088, now seen corresponding path program 4 times [2020-10-14 23:21:07,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:07,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56697665] [2020-10-14 23:21:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:07,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:09,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:09,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:21:09,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2111 [2020-10-14 23:21:09,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:09,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:21:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:10,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:10,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:10,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:10,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:10,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56697665] [2020-10-14 23:21:10,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:10,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:10,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421942270] [2020-10-14 23:21:10,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:10,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:10,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:10,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:10,088 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand 13 states. [2020-10-14 23:21:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:11,556 INFO L93 Difference]: Finished difference Result 220 states and 268 transitions. [2020-10-14 23:21:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:21:11,557 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-14 23:21:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:11,559 INFO L225 Difference]: With dead ends: 220 [2020-10-14 23:21:11,559 INFO L226 Difference]: Without dead ends: 196 [2020-10-14 23:21:11,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:21:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-14 23:21:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-14 23:21:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 23:21:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2020-10-14 23:21:11,573 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 173 transitions. Word has length 32 [2020-10-14 23:21:11,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:11,573 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 173 transitions. [2020-10-14 23:21:11,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:11,573 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 173 transitions. [2020-10-14 23:21:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:11,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:11,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:11,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:21:11,575 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:11,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1423988362, now seen corresponding path program 2 times [2020-10-14 23:21:11,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:11,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830654912] [2020-10-14 23:21:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:11,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:12,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:12,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:12,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:21:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1402 [2020-10-14 23:21:12,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:12,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:21:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:13,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:13,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:13,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:13,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:13,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:13,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:13,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830654912] [2020-10-14 23:21:13,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:13,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:13,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518669808] [2020-10-14 23:21:13,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:13,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:13,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:13,135 INFO L87 Difference]: Start difference. First operand 143 states and 173 transitions. Second operand 11 states. [2020-10-14 23:21:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:13,886 INFO L93 Difference]: Finished difference Result 167 states and 202 transitions. [2020-10-14 23:21:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:13,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:21:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:13,888 INFO L225 Difference]: With dead ends: 167 [2020-10-14 23:21:13,889 INFO L226 Difference]: Without dead ends: 157 [2020-10-14 23:21:13,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-14 23:21:13,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 144. [2020-10-14 23:21:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 23:21:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 174 transitions. [2020-10-14 23:21:13,904 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 174 transitions. Word has length 33 [2020-10-14 23:21:13,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:13,905 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 174 transitions. [2020-10-14 23:21:13,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:13,905 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 174 transitions. [2020-10-14 23:21:13,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:13,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:13,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:13,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:21:13,907 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:13,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:13,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1148499148, now seen corresponding path program 5 times [2020-10-14 23:21:13,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:13,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834570460] [2020-10-14 23:21:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:14,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:16,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2500 [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:21:16,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:16,833 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-14 23:21:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:17,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:17,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:17,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:17,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:17,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:17,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834570460] [2020-10-14 23:21:17,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:17,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:21:17,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066407048] [2020-10-14 23:21:17,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:21:17,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:17,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:21:17,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:17,168 INFO L87 Difference]: Start difference. First operand 144 states and 174 transitions. Second operand 15 states. [2020-10-14 23:21:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:19,041 INFO L93 Difference]: Finished difference Result 224 states and 273 transitions. [2020-10-14 23:21:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:21:19,042 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 33 [2020-10-14 23:21:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:19,043 INFO L225 Difference]: With dead ends: 224 [2020-10-14 23:21:19,043 INFO L226 Difference]: Without dead ends: 215 [2020-10-14 23:21:19,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:21:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-14 23:21:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 146. [2020-10-14 23:21:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 23:21:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2020-10-14 23:21:19,058 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 33 [2020-10-14 23:21:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:19,059 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2020-10-14 23:21:19,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:21:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2020-10-14 23:21:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:19,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:19,060 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:21:19,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:21:19,060 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:19,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1506177246, now seen corresponding path program 3 times [2020-10-14 23:21:19,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:19,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134550518] [2020-10-14 23:21:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:19,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:19,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:20,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:20,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:20,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:20,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-14 23:21:20,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:20,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:21:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:21:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:20,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:20,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:20,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:20,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:20,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:20,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:20,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:20,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134550518] [2020-10-14 23:21:20,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:20,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:21:20,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480054710] [2020-10-14 23:21:20,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:21:20,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:20,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:21:20,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:20,611 INFO L87 Difference]: Start difference. First operand 146 states and 177 transitions. Second operand 15 states. [2020-10-14 23:21:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:22,072 INFO L93 Difference]: Finished difference Result 184 states and 223 transitions. [2020-10-14 23:21:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:21:22,078 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-10-14 23:21:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:22,080 INFO L225 Difference]: With dead ends: 184 [2020-10-14 23:21:22,080 INFO L226 Difference]: Without dead ends: 182 [2020-10-14 23:21:22,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:21:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-14 23:21:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 150. [2020-10-14 23:21:22,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-14 23:21:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2020-10-14 23:21:22,099 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 34 [2020-10-14 23:21:22,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:22,099 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2020-10-14 23:21:22,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:21:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2020-10-14 23:21:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:22,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:22,100 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:21:22,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:21:22,100 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1506175324, now seen corresponding path program 1 times [2020-10-14 23:21:22,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:22,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632330144] [2020-10-14 23:21:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:22,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:23,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:23,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:21:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-14 23:21:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:23,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:21:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:21:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:23,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:23,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:23,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:23,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:23,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:23,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:23,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:23,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632330144] [2020-10-14 23:21:23,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:23,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:23,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842999637] [2020-10-14 23:21:23,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:23,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:23,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:23,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:23,504 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand 14 states. [2020-10-14 23:21:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:24,344 INFO L93 Difference]: Finished difference Result 194 states and 237 transitions. [2020-10-14 23:21:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:21:24,344 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-14 23:21:24,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:24,346 INFO L225 Difference]: With dead ends: 194 [2020-10-14 23:21:24,346 INFO L226 Difference]: Without dead ends: 185 [2020-10-14 23:21:24,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:21:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-14 23:21:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 150. [2020-10-14 23:21:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-14 23:21:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 182 transitions. [2020-10-14 23:21:24,362 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 182 transitions. Word has length 34 [2020-10-14 23:21:24,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:24,362 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 182 transitions. [2020-10-14 23:21:24,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 182 transitions. [2020-10-14 23:21:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:24,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:24,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:24,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:21:24,364 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:24,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2142266326, now seen corresponding path program 1 times [2020-10-14 23:21:24,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:24,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894139213] [2020-10-14 23:21:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:26,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:26,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:26,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:21:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2155 [2020-10-14 23:21:26,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:26,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:21:26,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:26,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:26,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:26,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:26,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:26,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:26,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:26,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894139213] [2020-10-14 23:21:26,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:26,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:26,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509287851] [2020-10-14 23:21:26,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:26,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:26,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:26,783 INFO L87 Difference]: Start difference. First operand 150 states and 182 transitions. Second operand 12 states. [2020-10-14 23:21:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:27,275 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2020-10-14 23:21:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:21:27,276 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 23:21:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:27,277 INFO L225 Difference]: With dead ends: 166 [2020-10-14 23:21:27,277 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 23:21:27,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:21:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 23:21:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2020-10-14 23:21:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 23:21:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2020-10-14 23:21:27,293 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 34 [2020-10-14 23:21:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:27,293 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2020-10-14 23:21:27,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2020-10-14 23:21:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:27,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:27,295 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:21:27,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:21:27,295 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:27,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:27,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1914545929, now seen corresponding path program 2 times [2020-10-14 23:21:27,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:27,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074825674] [2020-10-14 23:21:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:28,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:28,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:28,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:28,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-14 23:21:28,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:28,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:21:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:28,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:28,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:28,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:28,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:28,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:28,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:28,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074825674] [2020-10-14 23:21:28,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:28,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:28,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544116961] [2020-10-14 23:21:28,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:28,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:28,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:28,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:28,604 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand 12 states. [2020-10-14 23:21:29,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:29,288 INFO L93 Difference]: Finished difference Result 161 states and 196 transitions. [2020-10-14 23:21:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:29,291 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 23:21:29,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:29,293 INFO L225 Difference]: With dead ends: 161 [2020-10-14 23:21:29,293 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 23:21:29,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 23:21:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2020-10-14 23:21:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 23:21:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 169 transitions. [2020-10-14 23:21:29,306 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 169 transitions. Word has length 34 [2020-10-14 23:21:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:29,307 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 169 transitions. [2020-10-14 23:21:29,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:29,307 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 169 transitions. [2020-10-14 23:21:29,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:29,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:29,308 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:29,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:21:29,308 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:29,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1456408288, now seen corresponding path program 6 times [2020-10-14 23:21:29,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:29,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932098956] [2020-10-14 23:21:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:29,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-14 23:21:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:30,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:21:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:21:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:30,760 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-14 23:21:30,975 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-14 23:21:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:31,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:31,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:31,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:31,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:31,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:31,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932098956] [2020-10-14 23:21:31,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:31,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:21:31,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627374139] [2020-10-14 23:21:31,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:21:31,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:31,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:21:31,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:31,312 INFO L87 Difference]: Start difference. First operand 139 states and 169 transitions. Second operand 15 states. [2020-10-14 23:21:33,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:33,429 INFO L93 Difference]: Finished difference Result 214 states and 264 transitions. [2020-10-14 23:21:33,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:21:33,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-10-14 23:21:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:33,431 INFO L225 Difference]: With dead ends: 214 [2020-10-14 23:21:33,431 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 23:21:33,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:21:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 23:21:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 147. [2020-10-14 23:21:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 23:21:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 180 transitions. [2020-10-14 23:21:33,448 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 180 transitions. Word has length 34 [2020-10-14 23:21:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:33,448 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 180 transitions. [2020-10-14 23:21:33,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:21:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 180 transitions. [2020-10-14 23:21:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:21:33,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:33,449 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:33,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:21:33,450 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:33,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:33,450 INFO L82 PathProgramCache]: Analyzing trace with hash -21325179, now seen corresponding path program 7 times [2020-10-14 23:21:33,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:33,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017961534] [2020-10-14 23:21:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:37,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3683 [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:21:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:37,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:37,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:37,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:37,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:37,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:37,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017961534] [2020-10-14 23:21:37,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:37,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:37,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555454069] [2020-10-14 23:21:37,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:37,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:37,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:37,668 INFO L87 Difference]: Start difference. First operand 147 states and 180 transitions. Second operand 14 states. [2020-10-14 23:21:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:39,037 INFO L93 Difference]: Finished difference Result 197 states and 240 transitions. [2020-10-14 23:21:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:21:39,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-14 23:21:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:39,039 INFO L225 Difference]: With dead ends: 197 [2020-10-14 23:21:39,039 INFO L226 Difference]: Without dead ends: 187 [2020-10-14 23:21:39,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:21:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-14 23:21:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 148. [2020-10-14 23:21:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 23:21:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 181 transitions. [2020-10-14 23:21:39,057 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 181 transitions. Word has length 34 [2020-10-14 23:21:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:39,057 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 181 transitions. [2020-10-14 23:21:39,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 181 transitions. [2020-10-14 23:21:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:21:39,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:39,058 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:21:39,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:21:39,058 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:39,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2146997878, now seen corresponding path program 4 times [2020-10-14 23:21:39,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:39,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938100495] [2020-10-14 23:21:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:40,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:21:40,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:40,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-14 23:21:40,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:40,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:40,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:40,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:40,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:21:40,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:40,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:40,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:40,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:40,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:40,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:40,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938100495] [2020-10-14 23:21:40,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:40,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:40,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812070960] [2020-10-14 23:21:40,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:40,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:40,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:40,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:40,420 INFO L87 Difference]: Start difference. First operand 148 states and 181 transitions. Second operand 12 states. [2020-10-14 23:21:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:41,239 INFO L93 Difference]: Finished difference Result 174 states and 212 transitions. [2020-10-14 23:21:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:41,240 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-14 23:21:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:41,241 INFO L225 Difference]: With dead ends: 174 [2020-10-14 23:21:41,241 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 23:21:41,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 23:21:41,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 153. [2020-10-14 23:21:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 23:21:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 186 transitions. [2020-10-14 23:21:41,259 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 186 transitions. Word has length 35 [2020-10-14 23:21:41,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:41,259 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 186 transitions. [2020-10-14 23:21:41,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:41,259 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 186 transitions. [2020-10-14 23:21:41,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:21:41,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:41,260 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:21:41,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:21:41,261 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:41,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:41,261 INFO L82 PathProgramCache]: Analyzing trace with hash 816205443, now seen corresponding path program 3 times [2020-10-14 23:21:41,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:41,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728931257] [2020-10-14 23:21:41,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:42,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:42,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:21:42,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-14 23:21:42,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:42,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:21:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:42,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:42,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:42,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:42,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:42,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:42,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:42,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728931257] [2020-10-14 23:21:42,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:42,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:42,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952640171] [2020-10-14 23:21:42,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:42,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:42,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:42,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:42,729 INFO L87 Difference]: Start difference. First operand 153 states and 186 transitions. Second operand 12 states. [2020-10-14 23:21:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:43,369 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2020-10-14 23:21:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:21:43,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-14 23:21:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:43,371 INFO L225 Difference]: With dead ends: 180 [2020-10-14 23:21:43,372 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 23:21:43,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:21:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 23:21:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 153. [2020-10-14 23:21:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 23:21:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 186 transitions. [2020-10-14 23:21:43,387 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 186 transitions. Word has length 35 [2020-10-14 23:21:43,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:43,387 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 186 transitions. [2020-10-14 23:21:43,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:43,387 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 186 transitions. [2020-10-14 23:21:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:21:43,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:43,388 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:43,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:21:43,388 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:43,389 INFO L82 PathProgramCache]: Analyzing trace with hash 933743239, now seen corresponding path program 8 times [2020-10-14 23:21:43,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:43,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022163872] [2020-10-14 23:21:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:46,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:46,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:21:46,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3324 [2020-10-14 23:21:46,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:46,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:21:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:21:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:47,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:47,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:47,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022163872] [2020-10-14 23:21:47,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:47,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:47,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703657505] [2020-10-14 23:21:47,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:47,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:47,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:47,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:47,751 INFO L87 Difference]: Start difference. First operand 153 states and 186 transitions. Second operand 14 states. [2020-10-14 23:21:49,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:49,450 INFO L93 Difference]: Finished difference Result 211 states and 256 transitions. [2020-10-14 23:21:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:21:49,451 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-14 23:21:49,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:49,452 INFO L225 Difference]: With dead ends: 211 [2020-10-14 23:21:49,452 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 23:21:49,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:21:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 23:21:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 165. [2020-10-14 23:21:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:21:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 201 transitions. [2020-10-14 23:21:49,468 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 201 transitions. Word has length 35 [2020-10-14 23:21:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:49,468 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 201 transitions. [2020-10-14 23:21:49,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 201 transitions. [2020-10-14 23:21:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:49,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:49,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:21:49,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:21:49,469 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1127388745, now seen corresponding path program 4 times [2020-10-14 23:21:49,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:49,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046817041] [2020-10-14 23:21:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:50,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:21:50,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-14 23:21:50,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:50,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:21:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:21:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:51,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:51,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:51,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:51,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:51,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046817041] [2020-10-14 23:21:51,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:51,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:21:51,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705796612] [2020-10-14 23:21:51,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:21:51,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:51,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:21:51,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:21:51,071 INFO L87 Difference]: Start difference. First operand 165 states and 201 transitions. Second operand 16 states. [2020-10-14 23:21:52,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:52,186 INFO L93 Difference]: Finished difference Result 209 states and 252 transitions. [2020-10-14 23:21:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:21:52,186 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-10-14 23:21:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:52,188 INFO L225 Difference]: With dead ends: 209 [2020-10-14 23:21:52,188 INFO L226 Difference]: Without dead ends: 207 [2020-10-14 23:21:52,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:52,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-14 23:21:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 172. [2020-10-14 23:21:52,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 23:21:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2020-10-14 23:21:52,209 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 36 [2020-10-14 23:21:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:52,210 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2020-10-14 23:21:52,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:21:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2020-10-14 23:21:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:52,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:52,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:21:52,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:21:52,211 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:52,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1127390667, now seen corresponding path program 1 times [2020-10-14 23:21:52,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:52,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702090660] [2020-10-14 23:21:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:52,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:21:52,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-14 23:21:52,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:52,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:21:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:21:52,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:53,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:53,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:53,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:53,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:53,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:53,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:53,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:53,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:53,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:53,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702090660] [2020-10-14 23:21:53,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:53,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:53,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057440363] [2020-10-14 23:21:53,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:53,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:53,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:53,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:53,346 INFO L87 Difference]: Start difference. First operand 172 states and 210 transitions. Second operand 14 states. [2020-10-14 23:21:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:54,740 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2020-10-14 23:21:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:21:54,740 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 23:21:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:54,742 INFO L225 Difference]: With dead ends: 225 [2020-10-14 23:21:54,742 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 23:21:54,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:21:54,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 23:21:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 164. [2020-10-14 23:21:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 23:21:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 200 transitions. [2020-10-14 23:21:54,770 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 200 transitions. Word has length 36 [2020-10-14 23:21:54,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:54,771 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 200 transitions. [2020-10-14 23:21:54,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 200 transitions. [2020-10-14 23:21:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:54,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:54,772 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-14 23:21:54,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:21:54,772 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:54,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:54,773 INFO L82 PathProgramCache]: Analyzing trace with hash -447919954, now seen corresponding path program 5 times [2020-10-14 23:21:54,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:54,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834839172] [2020-10-14 23:21:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:56,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:21:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-10-14 23:21:56,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:56,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:21:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:56,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:56,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:56,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:56,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:56,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:56,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834839172] [2020-10-14 23:21:56,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:56,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:56,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443248803] [2020-10-14 23:21:56,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:56,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:56,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:56,564 INFO L87 Difference]: Start difference. First operand 164 states and 200 transitions. Second operand 13 states. [2020-10-14 23:21:57,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:57,411 INFO L93 Difference]: Finished difference Result 193 states and 234 transitions. [2020-10-14 23:21:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:57,412 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 23:21:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:57,413 INFO L225 Difference]: With dead ends: 193 [2020-10-14 23:21:57,413 INFO L226 Difference]: Without dead ends: 177 [2020-10-14 23:21:57,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:21:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-14 23:21:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2020-10-14 23:21:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:21:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 201 transitions. [2020-10-14 23:21:57,453 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 201 transitions. Word has length 36 [2020-10-14 23:21:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:57,454 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 201 transitions. [2020-10-14 23:21:57,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 201 transitions. [2020-10-14 23:21:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:21:57,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:57,455 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:57,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:21:57,456 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:57,456 INFO L82 PathProgramCache]: Analyzing trace with hash 476093125, now seen corresponding path program 9 times [2020-10-14 23:21:57,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:57,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664595576] [2020-10-14 23:21:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:02,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:02,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:22:02,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4609 [2020-10-14 23:22:02,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:02,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:22:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:22:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:02,799 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2020-10-14 23:22:02,989 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-14 23:22:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:03,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:03,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:03,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:03,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:03,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:03,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664595576] [2020-10-14 23:22:03,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:03,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:03,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792038887] [2020-10-14 23:22:03,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:03,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:03,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:03,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:03,335 INFO L87 Difference]: Start difference. First operand 165 states and 201 transitions. Second operand 17 states. [2020-10-14 23:22:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:06,221 INFO L93 Difference]: Finished difference Result 262 states and 320 transitions. [2020-10-14 23:22:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:22:06,222 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 36 [2020-10-14 23:22:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:06,223 INFO L225 Difference]: With dead ends: 262 [2020-10-14 23:22:06,223 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 23:22:06,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:22:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 23:22:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 170. [2020-10-14 23:22:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 23:22:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2020-10-14 23:22:06,245 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 36 [2020-10-14 23:22:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:06,246 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2020-10-14 23:22:06,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2020-10-14 23:22:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:22:06,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:06,247 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-14 23:22:06,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:22:06,247 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1925971077, now seen corresponding path program 5 times [2020-10-14 23:22:06,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:06,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166730564] [2020-10-14 23:22:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:22:07,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-14 23:22:07,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:22:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:22:07,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:07,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 23:22:07,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166730564] [2020-10-14 23:22:07,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:07,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:22:07,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160470089] [2020-10-14 23:22:07,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:22:07,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:07,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:22:07,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:22:07,137 INFO L87 Difference]: Start difference. First operand 170 states and 207 transitions. Second operand 9 states. [2020-10-14 23:22:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:07,597 INFO L93 Difference]: Finished difference Result 199 states and 241 transitions. [2020-10-14 23:22:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:22:07,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-14 23:22:07,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:07,599 INFO L225 Difference]: With dead ends: 199 [2020-10-14 23:22:07,599 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 23:22:07,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:22:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 23:22:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 170. [2020-10-14 23:22:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 23:22:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 206 transitions. [2020-10-14 23:22:07,620 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 206 transitions. Word has length 37 [2020-10-14 23:22:07,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:07,621 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 206 transitions. [2020-10-14 23:22:07,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:22:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 206 transitions. [2020-10-14 23:22:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:22:07,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:07,622 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-14 23:22:07,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:22:07,622 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:07,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2110830781, now seen corresponding path program 6 times [2020-10-14 23:22:07,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:07,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211336594] [2020-10-14 23:22:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:08,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:22:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:08,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:08,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:08,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:08,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:08,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:08,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211336594] [2020-10-14 23:22:08,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:08,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:08,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319508629] [2020-10-14 23:22:08,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:08,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:08,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:08,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:08,500 INFO L87 Difference]: Start difference. First operand 170 states and 206 transitions. Second operand 13 states. [2020-10-14 23:22:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:09,461 INFO L93 Difference]: Finished difference Result 201 states and 243 transitions. [2020-10-14 23:22:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:22:09,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-14 23:22:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:09,463 INFO L225 Difference]: With dead ends: 201 [2020-10-14 23:22:09,463 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 23:22:09,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 23:22:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 170. [2020-10-14 23:22:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 23:22:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 206 transitions. [2020-10-14 23:22:09,482 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 206 transitions. Word has length 37 [2020-10-14 23:22:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:09,485 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 206 transitions. [2020-10-14 23:22:09,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 206 transitions. [2020-10-14 23:22:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:22:09,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:09,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:22:09,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:22:09,486 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1271936219, now seen corresponding path program 1 times [2020-10-14 23:22:09,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:09,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577412133] [2020-10-14 23:22:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:09,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:12,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2594 [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:22:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:12,365 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-10-14 23:22:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:12,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:12,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:12,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:12,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:12,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577412133] [2020-10-14 23:22:12,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:12,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:12,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630793643] [2020-10-14 23:22:12,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:12,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:12,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:12,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:12,669 INFO L87 Difference]: Start difference. First operand 170 states and 206 transitions. Second operand 14 states. [2020-10-14 23:22:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:13,655 INFO L93 Difference]: Finished difference Result 209 states and 251 transitions. [2020-10-14 23:22:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:22:13,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-14 23:22:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:13,657 INFO L225 Difference]: With dead ends: 209 [2020-10-14 23:22:13,657 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 23:22:13,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 23:22:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 181. [2020-10-14 23:22:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 23:22:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 217 transitions. [2020-10-14 23:22:13,676 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 217 transitions. Word has length 37 [2020-10-14 23:22:13,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:13,677 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 217 transitions. [2020-10-14 23:22:13,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 217 transitions. [2020-10-14 23:22:13,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:22:13,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:13,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:22:13,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:22:13,678 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:13,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:13,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1214677917, now seen corresponding path program 1 times [2020-10-14 23:22:13,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:13,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459641526] [2020-10-14 23:22:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:14,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:14,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:22:14,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:14,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-14 23:22:14,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:14,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:22:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:14,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:14,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:14,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:14,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:14,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:14,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:14,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:14,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:14,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:14,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:14,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:14,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459641526] [2020-10-14 23:22:14,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:14,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:14,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316220652] [2020-10-14 23:22:14,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:14,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:14,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:14,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:14,814 INFO L87 Difference]: Start difference. First operand 181 states and 217 transitions. Second operand 16 states. [2020-10-14 23:22:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:15,629 INFO L93 Difference]: Finished difference Result 218 states and 260 transitions. [2020-10-14 23:22:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:15,630 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 23:22:15,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:15,632 INFO L225 Difference]: With dead ends: 218 [2020-10-14 23:22:15,632 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 23:22:15,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:22:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 23:22:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 184. [2020-10-14 23:22:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 23:22:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 221 transitions. [2020-10-14 23:22:15,655 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 221 transitions. Word has length 37 [2020-10-14 23:22:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:15,655 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 221 transitions. [2020-10-14 23:22:15,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 221 transitions. [2020-10-14 23:22:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:22:15,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:15,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:22:15,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:22:15,657 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:15,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:15,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1214675995, now seen corresponding path program 1 times [2020-10-14 23:22:15,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:15,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613957993] [2020-10-14 23:22:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:16,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:22:16,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-14 23:22:16,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:16,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:22:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:16,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:16,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:16,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:16,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:16,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613957993] [2020-10-14 23:22:16,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:16,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:16,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475197351] [2020-10-14 23:22:16,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:16,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:16,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:16,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:16,712 INFO L87 Difference]: Start difference. First operand 184 states and 221 transitions. Second operand 15 states. [2020-10-14 23:22:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:17,615 INFO L93 Difference]: Finished difference Result 235 states and 283 transitions. [2020-10-14 23:22:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:22:17,616 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-10-14 23:22:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:17,617 INFO L225 Difference]: With dead ends: 235 [2020-10-14 23:22:17,617 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 23:22:17,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:22:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 23:22:17,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 182. [2020-10-14 23:22:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 23:22:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2020-10-14 23:22:17,641 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 37 [2020-10-14 23:22:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:17,641 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2020-10-14 23:22:17,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2020-10-14 23:22:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:22:17,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:17,642 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-14 23:22:17,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:22:17,642 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:17,643 INFO L82 PathProgramCache]: Analyzing trace with hash 594207102, now seen corresponding path program 7 times [2020-10-14 23:22:17,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:17,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002405980] [2020-10-14 23:22:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:18,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:22:18,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-10-14 23:22:18,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:18,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:22:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:19,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:19,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:19,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:19,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:19,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:19,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:19,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:19,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:19,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:19,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002405980] [2020-10-14 23:22:19,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:19,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:19,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534248966] [2020-10-14 23:22:19,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:19,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:19,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:19,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:19,167 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand 14 states. [2020-10-14 23:22:19,390 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-10-14 23:22:20,754 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-14 23:22:21,141 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-14 23:22:21,427 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-14 23:22:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:21,604 INFO L93 Difference]: Finished difference Result 218 states and 260 transitions. [2020-10-14 23:22:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:22:21,605 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-14 23:22:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:21,607 INFO L225 Difference]: With dead ends: 218 [2020-10-14 23:22:21,607 INFO L226 Difference]: Without dead ends: 208 [2020-10-14 23:22:21,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:22:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-14 23:22:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 187. [2020-10-14 23:22:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 23:22:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 224 transitions. [2020-10-14 23:22:21,633 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 224 transitions. Word has length 37 [2020-10-14 23:22:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:21,634 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 224 transitions. [2020-10-14 23:22:21,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 224 transitions. [2020-10-14 23:22:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:22:21,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:21,635 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:21,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:22:21,635 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:21,636 INFO L82 PathProgramCache]: Analyzing trace with hash -826158521, now seen corresponding path program 10 times [2020-10-14 23:22:21,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:21,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332861440] [2020-10-14 23:22:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:21,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:23,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:23,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:22:23,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1817 [2020-10-14 23:22:23,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:23,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:23,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:22:23,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:24,032 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-10-14 23:22:24,191 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-14 23:22:24,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:24,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:24,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:24,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:24,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:24,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332861440] [2020-10-14 23:22:24,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:24,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:24,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80445651] [2020-10-14 23:22:24,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:24,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:24,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:24,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:24,554 INFO L87 Difference]: Start difference. First operand 187 states and 224 transitions. Second operand 17 states. [2020-10-14 23:22:26,245 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2020-10-14 23:22:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:28,054 INFO L93 Difference]: Finished difference Result 280 states and 341 transitions. [2020-10-14 23:22:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:28,058 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-10-14 23:22:28,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:28,059 INFO L225 Difference]: With dead ends: 280 [2020-10-14 23:22:28,059 INFO L226 Difference]: Without dead ends: 241 [2020-10-14 23:22:28,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:22:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-14 23:22:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 194. [2020-10-14 23:22:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 23:22:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 234 transitions. [2020-10-14 23:22:28,087 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 234 transitions. Word has length 37 [2020-10-14 23:22:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:28,088 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 234 transitions. [2020-10-14 23:22:28,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 234 transitions. [2020-10-14 23:22:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:22:28,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:28,089 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:28,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:22:28,089 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:28,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:28,089 INFO L82 PathProgramCache]: Analyzing trace with hash 711744898, now seen corresponding path program 11 times [2020-10-14 23:22:28,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:28,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756486747] [2020-10-14 23:22:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:31,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:31,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3753 [2020-10-14 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:22:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:32,195 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-14 23:22:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:32,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:32,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:32,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:32,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:32,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:32,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:32,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:32,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756486747] [2020-10-14 23:22:32,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:32,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:32,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778665125] [2020-10-14 23:22:32,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:32,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:32,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:32,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:32,585 INFO L87 Difference]: Start difference. First operand 194 states and 234 transitions. Second operand 16 states. [2020-10-14 23:22:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:35,113 INFO L93 Difference]: Finished difference Result 263 states and 318 transitions. [2020-10-14 23:22:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:22:35,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 23:22:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:35,116 INFO L225 Difference]: With dead ends: 263 [2020-10-14 23:22:35,116 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 23:22:35,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:22:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 23:22:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 195. [2020-10-14 23:22:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 23:22:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 235 transitions. [2020-10-14 23:22:35,144 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 235 transitions. Word has length 37 [2020-10-14 23:22:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:35,144 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 235 transitions. [2020-10-14 23:22:35,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 235 transitions. [2020-10-14 23:22:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:35,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:35,146 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-10-14 23:22:35,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:22:35,146 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:35,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1459592530, now seen corresponding path program 8 times [2020-10-14 23:22:35,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:35,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288102477] [2020-10-14 23:22:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:36,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:37,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:37,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:37,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2332 [2020-10-14 23:22:37,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:37,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:22:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:37,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:37,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:37,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:37,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:37,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288102477] [2020-10-14 23:22:37,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:37,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:37,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187285665] [2020-10-14 23:22:37,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:37,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:37,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:37,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:37,929 INFO L87 Difference]: Start difference. First operand 195 states and 235 transitions. Second operand 13 states. [2020-10-14 23:22:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:39,167 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-10-14 23:22:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:22:39,168 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 23:22:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:39,170 INFO L225 Difference]: With dead ends: 244 [2020-10-14 23:22:39,170 INFO L226 Difference]: Without dead ends: 234 [2020-10-14 23:22:39,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:22:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-14 23:22:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 195. [2020-10-14 23:22:39,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 23:22:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 235 transitions. [2020-10-14 23:22:39,190 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 235 transitions. Word has length 38 [2020-10-14 23:22:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:39,190 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 235 transitions. [2020-10-14 23:22:39,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 235 transitions. [2020-10-14 23:22:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:39,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:39,191 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:39,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:22:39,192 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:39,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2110888150, now seen corresponding path program 12 times [2020-10-14 23:22:39,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:39,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338871435] [2020-10-14 23:22:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:43,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:43,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:43,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:43,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4507 [2020-10-14 23:22:43,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:43,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:22:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:22:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:44,160 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-14 23:22:44,450 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2020-10-14 23:22:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:44,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:44,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:44,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:44,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:44,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:44,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338871435] [2020-10-14 23:22:44,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:44,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:44,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374010433] [2020-10-14 23:22:44,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:44,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:44,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:44,841 INFO L87 Difference]: Start difference. First operand 195 states and 235 transitions. Second operand 16 states. [2020-10-14 23:22:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:47,825 INFO L93 Difference]: Finished difference Result 307 states and 371 transitions. [2020-10-14 23:22:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:22:47,826 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-10-14 23:22:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:47,827 INFO L225 Difference]: With dead ends: 307 [2020-10-14 23:22:47,827 INFO L226 Difference]: Without dead ends: 297 [2020-10-14 23:22:47,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:22:47,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-14 23:22:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 207. [2020-10-14 23:22:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 23:22:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 250 transitions. [2020-10-14 23:22:47,849 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 250 transitions. Word has length 38 [2020-10-14 23:22:47,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:47,849 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 250 transitions. [2020-10-14 23:22:47,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 250 transitions. [2020-10-14 23:22:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:22:47,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:47,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2020-10-14 23:22:47,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:22:47,850 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:47,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:47,851 INFO L82 PathProgramCache]: Analyzing trace with hash -961037120, now seen corresponding path program 6 times [2020-10-14 23:22:47,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:47,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581221063] [2020-10-14 23:22:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:49,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:49,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:22:49,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-14 23:22:49,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:49,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:22:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:22:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:49,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:49,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:49,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:49,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 23:22:49,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581221063] [2020-10-14 23:22:49,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:49,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:22:49,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023127123] [2020-10-14 23:22:49,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:22:49,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:49,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:22:49,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:22:49,447 INFO L87 Difference]: Start difference. First operand 207 states and 250 transitions. Second operand 10 states. [2020-10-14 23:22:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:49,910 INFO L93 Difference]: Finished difference Result 231 states and 277 transitions. [2020-10-14 23:22:49,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:22:49,911 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-14 23:22:49,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:49,913 INFO L225 Difference]: With dead ends: 231 [2020-10-14 23:22:49,913 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 23:22:49,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 23:22:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2020-10-14 23:22:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-14 23:22:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 242 transitions. [2020-10-14 23:22:49,942 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 242 transitions. Word has length 39 [2020-10-14 23:22:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:49,943 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 242 transitions. [2020-10-14 23:22:49,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:22:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 242 transitions. [2020-10-14 23:22:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:22:49,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:49,944 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2020-10-14 23:22:49,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:22:49,944 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash -702871682, now seen corresponding path program 9 times [2020-10-14 23:22:49,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:49,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708309507] [2020-10-14 23:22:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:51,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1589 [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:22:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:51,830 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-14 23:22:52,051 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-10-14 23:22:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:52,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:52,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:52,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:52,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:52,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708309507] [2020-10-14 23:22:52,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:52,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:52,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655773207] [2020-10-14 23:22:52,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:52,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:52,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:52,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:52,577 INFO L87 Difference]: Start difference. First operand 202 states and 242 transitions. Second operand 17 states. [2020-10-14 23:22:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:54,303 INFO L93 Difference]: Finished difference Result 272 states and 325 transitions. [2020-10-14 23:22:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:22:54,304 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2020-10-14 23:22:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:54,305 INFO L225 Difference]: With dead ends: 272 [2020-10-14 23:22:54,305 INFO L226 Difference]: Without dead ends: 263 [2020-10-14 23:22:54,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-14 23:22:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 207. [2020-10-14 23:22:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 23:22:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2020-10-14 23:22:54,328 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 39 [2020-10-14 23:22:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:54,328 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2020-10-14 23:22:54,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2020-10-14 23:22:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:22:54,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:54,329 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 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] [2020-10-14 23:22:54,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:22:54,329 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:54,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2002166201, now seen corresponding path program 10 times [2020-10-14 23:22:54,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:54,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120545968] [2020-10-14 23:22:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:54,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:55,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:57,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:57,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:22:57,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:57,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3209 [2020-10-14 23:22:57,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:57,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:22:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:58,054 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-14 23:22:58,442 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 28 [2020-10-14 23:22:58,670 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2020-10-14 23:22:58,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:58,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:58,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:58,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:58,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:58,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:58,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120545968] [2020-10-14 23:22:58,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:58,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:58,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202009487] [2020-10-14 23:22:58,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:58,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:58,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:58,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:58,915 INFO L87 Difference]: Start difference. First operand 207 states and 248 transitions. Second operand 15 states. [2020-10-14 23:23:00,384 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-14 23:23:00,800 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-14 23:23:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:01,144 INFO L93 Difference]: Finished difference Result 240 states and 284 transitions. [2020-10-14 23:23:01,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:23:01,144 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-14 23:23:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:01,146 INFO L225 Difference]: With dead ends: 240 [2020-10-14 23:23:01,146 INFO L226 Difference]: Without dead ends: 230 [2020-10-14 23:23:01,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:23:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-14 23:23:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 207. [2020-10-14 23:23:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 23:23:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2020-10-14 23:23:01,169 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 39 [2020-10-14 23:23:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:01,170 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2020-10-14 23:23:01,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:23:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2020-10-14 23:23:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:23:01,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:01,171 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:01,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:23:01,171 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:01,171 INFO L82 PathProgramCache]: Analyzing trace with hash 581800578, now seen corresponding path program 13 times [2020-10-14 23:23:01,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:01,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896039099] [2020-10-14 23:23:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:05,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:23:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4239 [2020-10-14 23:23:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:05,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:23:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:23:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:05,815 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-14 23:23:05,949 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-14 23:23:06,093 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-14 23:23:06,303 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-10-14 23:23:06,522 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-14 23:23:06,718 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-14 23:23:06,890 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2020-10-14 23:23:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:07,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:07,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:07,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:07,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:07,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:07,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896039099] [2020-10-14 23:23:07,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:07,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:23:07,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330345360] [2020-10-14 23:23:07,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:23:07,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:07,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:23:07,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:23:07,377 INFO L87 Difference]: Start difference. First operand 207 states and 248 transitions. Second operand 21 states. [2020-10-14 23:23:09,626 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-14 23:23:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:11,735 INFO L93 Difference]: Finished difference Result 318 states and 383 transitions. [2020-10-14 23:23:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:23:11,735 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 39 [2020-10-14 23:23:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:11,738 INFO L225 Difference]: With dead ends: 318 [2020-10-14 23:23:11,738 INFO L226 Difference]: Without dead ends: 309 [2020-10-14 23:23:11,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:23:11,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-14 23:23:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 208. [2020-10-14 23:23:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 23:23:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2020-10-14 23:23:11,772 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 39 [2020-10-14 23:23:11,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:11,772 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2020-10-14 23:23:11,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:23:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2020-10-14 23:23:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:23:11,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:11,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 23:23:11,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:23:11,774 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:11,774 INFO L82 PathProgramCache]: Analyzing trace with hash 794734805, now seen corresponding path program 7 times [2020-10-14 23:23:11,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:11,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653568073] [2020-10-14 23:23:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:15,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:15,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:23:15,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:23:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3950 [2020-10-14 23:23:15,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:15,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:23:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:23:15,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:16,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:16,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:16,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:16,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:16,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:16,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 23:23:16,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653568073] [2020-10-14 23:23:16,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:16,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:23:16,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604361365] [2020-10-14 23:23:16,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:23:16,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:16,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:23:16,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:23:16,133 INFO L87 Difference]: Start difference. First operand 208 states and 249 transitions. Second operand 13 states. [2020-10-14 23:23:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:17,034 INFO L93 Difference]: Finished difference Result 254 states and 303 transitions. [2020-10-14 23:23:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:23:17,034 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-14 23:23:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:17,036 INFO L225 Difference]: With dead ends: 254 [2020-10-14 23:23:17,036 INFO L226 Difference]: Without dead ends: 241 [2020-10-14 23:23:17,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:23:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-14 23:23:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 215. [2020-10-14 23:23:17,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 23:23:17,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 257 transitions. [2020-10-14 23:23:17,071 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 257 transitions. Word has length 40 [2020-10-14 23:23:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:17,071 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 257 transitions. [2020-10-14 23:23:17,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:23:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 257 transitions. [2020-10-14 23:23:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:23:17,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:17,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 23:23:17,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:23:17,072 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1474793175, now seen corresponding path program 11 times [2020-10-14 23:23:17,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:17,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725559389] [2020-10-14 23:23:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:17,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:17,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:17,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:23:17,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-14 23:23:17,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:17,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:23:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:23:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:18,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:18,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:18,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:18,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:18,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:18,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:23:18,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725559389] [2020-10-14 23:23:18,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:18,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:23:18,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206925207] [2020-10-14 23:23:18,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:23:18,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:18,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:23:18,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:23:18,019 INFO L87 Difference]: Start difference. First operand 215 states and 257 transitions. Second operand 10 states. [2020-10-14 23:23:18,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:18,875 INFO L93 Difference]: Finished difference Result 247 states and 297 transitions. [2020-10-14 23:23:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:23:18,876 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-14 23:23:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:18,878 INFO L225 Difference]: With dead ends: 247 [2020-10-14 23:23:18,878 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 23:23:18,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:23:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 23:23:18,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2020-10-14 23:23:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-14 23:23:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 268 transitions. [2020-10-14 23:23:18,903 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 268 transitions. Word has length 40 [2020-10-14 23:23:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:18,904 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 268 transitions. [2020-10-14 23:23:18,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:23:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 268 transitions. [2020-10-14 23:23:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:23:18,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:18,905 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-10-14 23:23:18,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:23:18,905 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:18,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:18,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1280638126, now seen corresponding path program 12 times [2020-10-14 23:23:18,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:18,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584495614] [2020-10-14 23:23:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:20,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:20,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:23:20,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-10-14 23:23:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:20,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:23:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:20,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:20,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:20,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:20,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:20,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:20,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:20,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584495614] [2020-10-14 23:23:20,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:20,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:23:20,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686654302] [2020-10-14 23:23:20,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:23:20,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:23:20,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:23:20,836 INFO L87 Difference]: Start difference. First operand 225 states and 268 transitions. Second operand 14 states. [2020-10-14 23:23:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:22,500 INFO L93 Difference]: Finished difference Result 268 states and 320 transitions. [2020-10-14 23:23:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:23:22,500 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-10-14 23:23:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:22,502 INFO L225 Difference]: With dead ends: 268 [2020-10-14 23:23:22,502 INFO L226 Difference]: Without dead ends: 257 [2020-10-14 23:23:22,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:23:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-14 23:23:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 220. [2020-10-14 23:23:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 23:23:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 263 transitions. [2020-10-14 23:23:22,534 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 263 transitions. Word has length 40 [2020-10-14 23:23:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:22,534 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 263 transitions. [2020-10-14 23:23:22,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:23:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 263 transitions. [2020-10-14 23:23:22,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:23:22,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:22,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2020-10-14 23:23:22,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:23:22,535 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:22,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:22,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1931493556, now seen corresponding path program 2 times [2020-10-14 23:23:22,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:22,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208558670] [2020-10-14 23:23:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:26,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:26,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:23:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:23:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4041 [2020-10-14 23:23:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:26,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:23:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:27,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:27,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:27,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:27,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:27,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:27,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:27,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:27,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208558670] [2020-10-14 23:23:27,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:27,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:23:27,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701242011] [2020-10-14 23:23:27,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:23:27,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:27,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:23:27,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:23:27,170 INFO L87 Difference]: Start difference. First operand 220 states and 263 transitions. Second operand 15 states. [2020-10-14 23:23:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:29,155 INFO L93 Difference]: Finished difference Result 275 states and 327 transitions. [2020-10-14 23:23:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:23:29,156 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-14 23:23:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:29,158 INFO L225 Difference]: With dead ends: 275 [2020-10-14 23:23:29,158 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 23:23:29,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:23:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 23:23:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 237. [2020-10-14 23:23:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-14 23:23:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 280 transitions. [2020-10-14 23:23:29,191 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 280 transitions. Word has length 40 [2020-10-14 23:23:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:29,191 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 280 transitions. [2020-10-14 23:23:29,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:23:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 280 transitions. [2020-10-14 23:23:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:23:29,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:29,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2020-10-14 23:23:29,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:23:29,193 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:29,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1988751858, now seen corresponding path program 2 times [2020-10-14 23:23:29,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:29,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726162636] [2020-10-14 23:23:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:31,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:31,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:23:31,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:31,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1916 [2020-10-14 23:23:31,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:31,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:31,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:31,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:31,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:23:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:31,400 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-14 23:23:31,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:31,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:31,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:31,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:31,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:31,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:31,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:31,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726162636] [2020-10-14 23:23:31,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:31,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:23:31,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533698466] [2020-10-14 23:23:31,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:23:31,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:31,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:23:31,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:23:31,808 INFO L87 Difference]: Start difference. First operand 237 states and 280 transitions. Second operand 16 states. [2020-10-14 23:23:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:33,380 INFO L93 Difference]: Finished difference Result 284 states and 337 transitions. [2020-10-14 23:23:33,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:23:33,381 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-14 23:23:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:33,383 INFO L225 Difference]: With dead ends: 284 [2020-10-14 23:23:33,383 INFO L226 Difference]: Without dead ends: 275 [2020-10-14 23:23:33,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:23:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-14 23:23:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 238. [2020-10-14 23:23:33,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 23:23:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 281 transitions. [2020-10-14 23:23:33,415 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 281 transitions. Word has length 40 [2020-10-14 23:23:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:33,415 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 281 transitions. [2020-10-14 23:23:33,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:23:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 281 transitions. [2020-10-14 23:23:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:23:33,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:33,417 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-10-14 23:23:33,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:23:33,417 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash -762533421, now seen corresponding path program 13 times [2020-10-14 23:23:33,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:33,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849853073] [2020-10-14 23:23:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:35,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:35,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:23:35,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:35,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2174 [2020-10-14 23:23:35,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:35,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:23:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:23:35,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:36,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:36,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:36,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:36,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:36,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:36,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:36,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:36,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:36,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:36,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849853073] [2020-10-14 23:23:36,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:36,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:23:36,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906225751] [2020-10-14 23:23:36,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:23:36,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:36,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:23:36,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:23:36,362 INFO L87 Difference]: Start difference. First operand 238 states and 281 transitions. Second operand 16 states. [2020-10-14 23:23:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:37,776 INFO L93 Difference]: Finished difference Result 293 states and 348 transitions. [2020-10-14 23:23:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:23:37,777 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-14 23:23:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:37,778 INFO L225 Difference]: With dead ends: 293 [2020-10-14 23:23:37,778 INFO L226 Difference]: Without dead ends: 283 [2020-10-14 23:23:37,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:23:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-14 23:23:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 238. [2020-10-14 23:23:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 23:23:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 281 transitions. [2020-10-14 23:23:37,810 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 281 transitions. Word has length 40 [2020-10-14 23:23:37,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:37,810 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 281 transitions. [2020-10-14 23:23:37,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:23:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 281 transitions. [2020-10-14 23:23:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:23:37,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:37,811 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:37,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:23:37,811 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:37,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1844194774, now seen corresponding path program 14 times [2020-10-14 23:23:37,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:37,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534767453] [2020-10-14 23:23:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:40,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:40,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:23:40,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:40,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2969 [2020-10-14 23:23:40,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:40,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:23:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:23:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:41,268 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-14 23:23:41,450 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-14 23:23:41,717 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2020-10-14 23:23:42,012 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-14 23:23:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:42,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:42,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:42,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:42,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:42,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:42,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:42,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:42,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534767453] [2020-10-14 23:23:42,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:42,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:42,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907321784] [2020-10-14 23:23:42,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:42,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:42,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:42,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:42,395 INFO L87 Difference]: Start difference. First operand 238 states and 281 transitions. Second operand 17 states. [2020-10-14 23:23:45,111 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-14 23:23:45,569 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-14 23:23:46,094 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-14 23:23:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:46,761 INFO L93 Difference]: Finished difference Result 355 states and 424 transitions. [2020-10-14 23:23:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:23:46,762 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-10-14 23:23:46,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:46,764 INFO L225 Difference]: With dead ends: 355 [2020-10-14 23:23:46,764 INFO L226 Difference]: Without dead ends: 309 [2020-10-14 23:23:46,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:23:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-14 23:23:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 244. [2020-10-14 23:23:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-14 23:23:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2020-10-14 23:23:46,812 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 40 [2020-10-14 23:23:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:46,812 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2020-10-14 23:23:46,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2020-10-14 23:23:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:23:46,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:46,813 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:46,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:23:46,814 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:46,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:46,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1413829041, now seen corresponding path program 15 times [2020-10-14 23:23:46,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:46,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416711912] [2020-10-14 23:23:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:46,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:51,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:52,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:23:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5719 [2020-10-14 23:23:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:52,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:23:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:23:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:53,028 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-14 23:23:53,308 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2020-10-14 23:23:53,541 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-14 23:23:53,835 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-10-14 23:23:54,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:54,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:54,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:54,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:54,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:54,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:54,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416711912] [2020-10-14 23:23:54,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:54,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:54,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633315716] [2020-10-14 23:23:54,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:54,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:54,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:54,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:54,221 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 17 states. [2020-10-14 23:23:55,380 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 23:23:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:57,930 INFO L93 Difference]: Finished difference Result 345 states and 411 transitions. [2020-10-14 23:23:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:23:57,930 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-10-14 23:23:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:57,932 INFO L225 Difference]: With dead ends: 345 [2020-10-14 23:23:57,932 INFO L226 Difference]: Without dead ends: 335 [2020-10-14 23:23:57,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:23:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-14 23:23:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 245. [2020-10-14 23:23:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-14 23:23:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 291 transitions. [2020-10-14 23:23:57,964 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 291 transitions. Word has length 40 [2020-10-14 23:23:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:57,964 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 291 transitions. [2020-10-14 23:23:57,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:57,964 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 291 transitions. [2020-10-14 23:23:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:23:57,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:57,965 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:23:57,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:23:57,966 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:57,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:57,966 INFO L82 PathProgramCache]: Analyzing trace with hash 170153824, now seen corresponding path program 1 times [2020-10-14 23:23:57,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:57,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815830152] [2020-10-14 23:23:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:57,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:00,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:24:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2334 [2020-10-14 23:24:00,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:00,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:24:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:24:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:00,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:00,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:00,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:00,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:00,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:00,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815830152] [2020-10-14 23:24:00,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:00,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:24:00,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18391459] [2020-10-14 23:24:00,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:24:00,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:00,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:24:00,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:24:00,816 INFO L87 Difference]: Start difference. First operand 245 states and 291 transitions. Second operand 16 states. [2020-10-14 23:24:02,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:02,484 INFO L93 Difference]: Finished difference Result 290 states and 346 transitions. [2020-10-14 23:24:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:24:02,485 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-14 23:24:02,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:02,487 INFO L225 Difference]: With dead ends: 290 [2020-10-14 23:24:02,487 INFO L226 Difference]: Without dead ends: 281 [2020-10-14 23:24:02,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:24:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-14 23:24:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 258. [2020-10-14 23:24:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-14 23:24:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 308 transitions. [2020-10-14 23:24:02,521 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 308 transitions. Word has length 41 [2020-10-14 23:24:02,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:02,521 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 308 transitions. [2020-10-14 23:24:02,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:24:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 308 transitions. [2020-10-14 23:24:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:24:02,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:02,522 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:24:02,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:24:02,523 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:02,523 INFO L82 PathProgramCache]: Analyzing trace with hash 227412126, now seen corresponding path program 1 times [2020-10-14 23:24:02,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:02,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631670216] [2020-10-14 23:24:02,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:07,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:07,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:24:07,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:24:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:24:07,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:07,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:24:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:24:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:08,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:08,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:08,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:08,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:08,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:08,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631670216] [2020-10-14 23:24:08,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:08,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:24:08,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913626033] [2020-10-14 23:24:08,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:24:08,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:08,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:24:08,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:08,025 INFO L87 Difference]: Start difference. First operand 258 states and 308 transitions. Second operand 15 states. [2020-10-14 23:24:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:09,113 INFO L93 Difference]: Finished difference Result 303 states and 361 transitions. [2020-10-14 23:24:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:24:09,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:24:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:09,115 INFO L225 Difference]: With dead ends: 303 [2020-10-14 23:24:09,115 INFO L226 Difference]: Without dead ends: 283 [2020-10-14 23:24:09,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:24:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-14 23:24:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 270. [2020-10-14 23:24:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-14 23:24:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 320 transitions. [2020-10-14 23:24:09,167 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 320 transitions. Word has length 41 [2020-10-14 23:24:09,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:09,168 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 320 transitions. [2020-10-14 23:24:09,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:24:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 320 transitions. [2020-10-14 23:24:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:24:09,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:09,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 23:24:09,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:24:09,169 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:09,170 INFO L82 PathProgramCache]: Analyzing trace with hash 461798967, now seen corresponding path program 8 times [2020-10-14 23:24:09,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:09,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642473960] [2020-10-14 23:24:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:09,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:10,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:12,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:12,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:24:12,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:24:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3128 [2020-10-14 23:24:12,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:12,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:24:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:24:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:12,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:12,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:12,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:12,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:12,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:12,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642473960] [2020-10-14 23:24:12,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:12,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:24:12,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864171362] [2020-10-14 23:24:12,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:24:12,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:12,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:24:12,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:12,574 INFO L87 Difference]: Start difference. First operand 270 states and 320 transitions. Second operand 13 states. [2020-10-14 23:24:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:13,473 INFO L93 Difference]: Finished difference Result 326 states and 387 transitions. [2020-10-14 23:24:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:24:13,474 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 23:24:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:13,475 INFO L225 Difference]: With dead ends: 326 [2020-10-14 23:24:13,475 INFO L226 Difference]: Without dead ends: 316 [2020-10-14 23:24:13,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:24:13,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-14 23:24:13,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 295. [2020-10-14 23:24:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-14 23:24:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 353 transitions. [2020-10-14 23:24:13,534 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 353 transitions. Word has length 41 [2020-10-14 23:24:13,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:13,534 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 353 transitions. [2020-10-14 23:24:13,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:24:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 353 transitions. [2020-10-14 23:24:13,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:24:13,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:13,536 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-10-14 23:24:13,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:24:13,536 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:13,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:13,536 INFO L82 PathProgramCache]: Analyzing trace with hash -568875783, now seen corresponding path program 14 times [2020-10-14 23:24:13,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:13,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547294018] [2020-10-14 23:24:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:15,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:16,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:18,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:18,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:24:18,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4574 [2020-10-14 23:24:18,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:18,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:24:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:24:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0