/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 12:42:33,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 12:42:33,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 12:42:33,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 12:42:33,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 12:42:33,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 12:42:33,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 12:42:33,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 12:42:33,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 12:42:33,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 12:42:33,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 12:42:33,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 12:42:33,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 12:42:33,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 12:42:33,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 12:42:33,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 12:42:33,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 12:42:33,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 12:42:33,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 12:42:33,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 12:42:33,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 12:42:33,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 12:42:33,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 12:42:33,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 12:42:33,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 12:42:33,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 12:42:33,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 12:42:33,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 12:42:33,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 12:42:33,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 12:42:33,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 12:42:33,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 12:42:33,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 12:42:33,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 12:42:33,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 12:42:33,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 12:42:33,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 12:42:33,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 12:42:33,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 12:42:33,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 12:42:33,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 12:42:33,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 12:42:33,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 12:42:33,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 12:42:33,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 12:42:33,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 12:42:33,530 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 12:42:33,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 12:42:33,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 12:42:33,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 12:42:33,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 12:42:33,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 12:42:33,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 12:42:33,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 12:42:33,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 12:42:33,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 12:42:33,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 12:42:33,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 12:42:33,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 12:42:33,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 12:42:33,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 12:42:33,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 12:42:33,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 12:42:33,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 12:42:33,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 12:42:33,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 12:42:33,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 12:42:33,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 12:42:33,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 12:42:33,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 12:42:33,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 12:42:33,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 12:42:33,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 12:42:33,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 12:42:33,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 12:42:33,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 12:42:33,843 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 12:42:33,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-10-13 12:42:33,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b50ab3e36/31d3dfb72fbb4c18ab45757a8713c77c/FLAGb6c232232 [2020-10-13 12:42:34,502 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 12:42:34,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-10-13 12:42:34,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b50ab3e36/31d3dfb72fbb4c18ab45757a8713c77c/FLAGb6c232232 [2020-10-13 12:42:34,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b50ab3e36/31d3dfb72fbb4c18ab45757a8713c77c [2020-10-13 12:42:34,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 12:42:34,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 12:42:34,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 12:42:34,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 12:42:34,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 12:42:34,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:34" (1/1) ... [2020-10-13 12:42:34,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b6db2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:34, skipping insertion in model container [2020-10-13 12:42:34,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:34" (1/1) ... [2020-10-13 12:42:34,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 12:42:34,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 12:42:35,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 12:42:35,365 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 12:42:35,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 12:42:35,503 INFO L208 MainTranslator]: Completed translation [2020-10-13 12:42:35,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35 WrapperNode [2020-10-13 12:42:35,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 12:42:35,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 12:42:35,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 12:42:35,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 12:42:35,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (1/1) ... [2020-10-13 12:42:35,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (1/1) ... [2020-10-13 12:42:35,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (1/1) ... [2020-10-13 12:42:35,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (1/1) ... [2020-10-13 12:42:35,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (1/1) ... [2020-10-13 12:42:35,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (1/1) ... [2020-10-13 12:42:35,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (1/1) ... [2020-10-13 12:42:35,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 12:42:35,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 12:42:35,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 12:42:35,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 12:42:35,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 12:42:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 12:42:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 12:42:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-13 12:42:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-13 12:42:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-13 12:42:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-13 12:42:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-13 12:42:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-13 12:42:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-13 12:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-13 12:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-13 12:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-13 12:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-13 12:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-13 12:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-13 12:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-13 12:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-13 12:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-13 12:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-13 12:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-13 12:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-13 12:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-13 12:42:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-10-13 12:42:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-13 12:42:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-13 12:42:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-13 12:42:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-13 12:42:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-13 12:42:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-13 12:42:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-13 12:42:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-13 12:42:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-13 12:42:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-13 12:42:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-13 12:42:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-13 12:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-13 12:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-13 12:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-13 12:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-13 12:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 12:42:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 12:42:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 12:42:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-13 12:42:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-13 12:42:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-13 12:42:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-13 12:42:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-13 12:42:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-13 12:42:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-13 12:42:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-13 12:42:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 12:42:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-13 12:42:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-13 12:42:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 12:42:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 12:42:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-13 12:42:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 12:42:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 12:42:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 12:42:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 12:42:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-13 12:42:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 12:42:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-13 12:42:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-13 12:42:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 12:42:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-13 12:42:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-13 12:42:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-13 12:42:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-13 12:42:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-13 12:42:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-13 12:42:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-13 12:42:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-13 12:42:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-13 12:42:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-13 12:42:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-13 12:42:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-13 12:42:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-13 12:42:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-13 12:42:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-13 12:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-13 12:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-13 12:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-10-13 12:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-13 12:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-13 12:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-13 12:42:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-13 12:42:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-13 12:42:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-13 12:42:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-13 12:42:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 12:42:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 12:42:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-13 12:42:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 12:42:36,744 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 12:42:36,744 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-13 12:42:36,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:36 BoogieIcfgContainer [2020-10-13 12:42:36,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 12:42:36,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 12:42:36,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 12:42:36,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 12:42:36,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:42:34" (1/3) ... [2020-10-13 12:42:36,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1190a58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:36, skipping insertion in model container [2020-10-13 12:42:36,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:35" (2/3) ... [2020-10-13 12:42:36,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1190a58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:36, skipping insertion in model container [2020-10-13 12:42:36,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:36" (3/3) ... [2020-10-13 12:42:36,760 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product31.cil.c [2020-10-13 12:42:36,771 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 12:42:36,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 12:42:36,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 12:42:36,823 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 12:42:36,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 12:42:36,824 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 12:42:36,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 12:42:36,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 12:42:36,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 12:42:36,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 12:42:36,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 12:42:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-10-13 12:42:36,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 12:42:36,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:42:36,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:42:36,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:42:36,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:42:36,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2139663592, now seen corresponding path program 1 times [2020-10-13 12:42:36,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:42:36,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325790872] [2020-10-13 12:42:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:42:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:37,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:39,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:39,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 12:42:39,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 12:42:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2458 [2020-10-13 12:42:39,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 12:42:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:39,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 12:42:40,016 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:42:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:42:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:40,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:40,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 12:42:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:40,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 12:42:40,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:42:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:40,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:40,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:40,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:40,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:42:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:40,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:40,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:40,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:40,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:40,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:40,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:42:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:40,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:40,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:40,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:40,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:40,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:40,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:40,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:42:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:40,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:40,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:40,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:40,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:40,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 12:42:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:40,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:40,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:40,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:40,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:40,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 12:42:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:40,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:40,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:40,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:40,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 12:42:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:40,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:40,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:40,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:40,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:40,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:42:40,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325790872] [2020-10-13 12:42:40,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:42:40,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 12:42:40,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940447552] [2020-10-13 12:42:40,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 12:42:40,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:42:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 12:42:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 12:42:40,222 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-10-13 12:42:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:42:41,448 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-10-13 12:42:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 12:42:41,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-10-13 12:42:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:42:41,471 INFO L225 Difference]: With dead ends: 305 [2020-10-13 12:42:41,472 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 12:42:41,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 12:42:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 12:42:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-10-13 12:42:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 12:42:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-10-13 12:42:41,639 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-10-13 12:42:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:42:41,640 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-10-13 12:42:41,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 12:42:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-10-13 12:42:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 12:42:41,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:42:41,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:42:41,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 12:42:41,654 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:42:41,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:42:41,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1114338562, now seen corresponding path program 1 times [2020-10-13 12:42:41,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:42:41,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165542035] [2020-10-13 12:42:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:42:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:43,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:43,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 12:42:43,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 12:42:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2064 [2020-10-13 12:42:43,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 12:42:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 12:42:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:44,037 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:42:44,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:42:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:44,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:44,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:44,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 12:42:44,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:42:44,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:42:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:44,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:44,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:44,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:44,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:44,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:44,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:44,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:44,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:44,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:44,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:42:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:44,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:44,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:44,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:42:44,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:42:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:44,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:44,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:44,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:44,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:42:44,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:44,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:42:44,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:42:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:42:44,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 12:42:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:44,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:44,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:44,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:44,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:44,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:44,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 12:42:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:44,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:44,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:44,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 12:42:44,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:42:44,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 12:42:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:44,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:44,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:44,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:42:44,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 12:42:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:42:44,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165542035] [2020-10-13 12:42:44,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:42:44,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 12:42:44,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961256518] [2020-10-13 12:42:44,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 12:42:44,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:42:44,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 12:42:44,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 12:42:44,205 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-10-13 12:42:44,592 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 12:42:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:42:45,400 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-10-13 12:42:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 12:42:45,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-13 12:42:45,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:42:45,405 INFO L225 Difference]: With dead ends: 232 [2020-10-13 12:42:45,405 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 12:42:45,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 12:42:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 12:42:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-10-13 12:42:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 12:42:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-10-13 12:42:45,448 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-10-13 12:42:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:42:45,448 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-10-13 12:42:45,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 12:42:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-10-13 12:42:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 12:42:45,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:42:45,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:42:45,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 12:42:45,451 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:42:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:42:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1063304095, now seen corresponding path program 1 times [2020-10-13 12:42:45,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:42:45,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389028082] [2020-10-13 12:42:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:42:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 12:42:47,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 12:42:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1657 [2020-10-13 12:42:47,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 12:42:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 12:42:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,354 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:42:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:42:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:47,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 12:42:47,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 12:42:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:42:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:47,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:47,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:47,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:42:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:42:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:47,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:47,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:47,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:47,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:42:47,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:42:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:47,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:47,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:42:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:42:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:47,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:47,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:47,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:42:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 12:42:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:47,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 12:42:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:47,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:47,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:47,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:47,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 12:42:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:47,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:47,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:47,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:47,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:47,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:42:47,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389028082] [2020-10-13 12:42:47,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:42:47,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 12:42:47,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501281985] [2020-10-13 12:42:47,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 12:42:47,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:42:47,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 12:42:47,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 12:42:47,504 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 4 states. [2020-10-13 12:42:47,805 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 12:42:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:42:49,259 INFO L93 Difference]: Finished difference Result 357 states and 446 transitions. [2020-10-13 12:42:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 12:42:49,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-13 12:42:49,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:42:49,265 INFO L225 Difference]: With dead ends: 357 [2020-10-13 12:42:49,265 INFO L226 Difference]: Without dead ends: 259 [2020-10-13 12:42:49,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 12:42:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-13 12:42:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 214. [2020-10-13 12:42:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-13 12:42:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 259 transitions. [2020-10-13 12:42:49,335 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 259 transitions. Word has length 57 [2020-10-13 12:42:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:42:49,335 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 259 transitions. [2020-10-13 12:42:49,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 12:42:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 259 transitions. [2020-10-13 12:42:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 12:42:49,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:42:49,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:42:49,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 12:42:49,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:42:49,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:42:49,338 INFO L82 PathProgramCache]: Analyzing trace with hash 248297521, now seen corresponding path program 1 times [2020-10-13 12:42:49,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:42:49,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792055179] [2020-10-13 12:42:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:42:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 12:42:50,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-13 12:42:50,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 12:42:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 12:42:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:50,585 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:42:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:42:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:50,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 12:42:50,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 12:42:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:42:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:42:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:50,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:42:50,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:42:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:42:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:50,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:50,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:42:50,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:42:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:50,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 12:42:50,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:42:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:42:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:50,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:50,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:42:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:50,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 12:42:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 12:42:50,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:50,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 12:42:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 12:42:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:50,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:50,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:42:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:42:50,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 12:42:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:50,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:42:50,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 12:42:50,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:50,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:42:50,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:50,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 12:42:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:50,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:50,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:50,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:50,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:42:50,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792055179] [2020-10-13 12:42:50,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:42:50,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 12:42:50,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544558451] [2020-10-13 12:42:50,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 12:42:50,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:42:50,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 12:42:50,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 12:42:50,822 INFO L87 Difference]: Start difference. First operand 214 states and 259 transitions. Second operand 8 states. [2020-10-13 12:42:51,217 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 12:42:52,679 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 12:42:53,023 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 12:42:53,291 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 12:42:53,637 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 12:42:54,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:42:54,235 INFO L93 Difference]: Finished difference Result 662 states and 868 transitions. [2020-10-13 12:42:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 12:42:54,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-13 12:42:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:42:54,242 INFO L225 Difference]: With dead ends: 662 [2020-10-13 12:42:54,242 INFO L226 Difference]: Without dead ends: 472 [2020-10-13 12:42:54,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-13 12:42:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-13 12:42:54,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 407. [2020-10-13 12:42:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 12:42:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 505 transitions. [2020-10-13 12:42:54,347 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 505 transitions. Word has length 63 [2020-10-13 12:42:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:42:54,348 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 505 transitions. [2020-10-13 12:42:54,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 12:42:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 505 transitions. [2020-10-13 12:42:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 12:42:54,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:42:54,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:42:54,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 12:42:54,352 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:42:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:42:54,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1905140809, now seen corresponding path program 1 times [2020-10-13 12:42:54,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:42:54,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818337111] [2020-10-13 12:42:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:42:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:55,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 12:42:59,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 12:42:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 12:42:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 12:42:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 12:42:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 12:42:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,618 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:42:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:42:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 12:42:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:42:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:59,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 12:42:59,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:42:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:59,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:42:59,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:42:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:59,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:59,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:42:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:42:59,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 12:42:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 12:42:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 12:42:59,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:59,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:42:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:42:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 12:42:59,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 12:42:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:59,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:59,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 12:42:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:59,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:59,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 12:42:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:59,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:59,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:59,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 12:42:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:42:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:42:59,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:42:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:42:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:42:59,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:42:59,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:42:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:42:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:42:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:42:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:42:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:42:59,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818337111] [2020-10-13 12:42:59,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:42:59,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 12:42:59,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438154239] [2020-10-13 12:42:59,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 12:42:59,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:42:59,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 12:42:59,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 12:42:59,747 INFO L87 Difference]: Start difference. First operand 407 states and 505 transitions. Second operand 6 states. [2020-10-13 12:42:59,999 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 12:43:00,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:43:00,666 INFO L93 Difference]: Finished difference Result 653 states and 837 transitions. [2020-10-13 12:43:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 12:43:00,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-13 12:43:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:43:00,669 INFO L225 Difference]: With dead ends: 653 [2020-10-13 12:43:00,669 INFO L226 Difference]: Without dead ends: 270 [2020-10-13 12:43:00,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-13 12:43:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-13 12:43:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 253. [2020-10-13 12:43:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-13 12:43:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 286 transitions. [2020-10-13 12:43:00,716 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 286 transitions. Word has length 67 [2020-10-13 12:43:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:43:00,717 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 286 transitions. [2020-10-13 12:43:00,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 12:43:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 286 transitions. [2020-10-13 12:43:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 12:43:00,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:43:00,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:43:00,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 12:43:00,719 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:43:00,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:43:00,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1719041065, now seen corresponding path program 1 times [2020-10-13 12:43:00,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:43:00,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245621428] [2020-10-13 12:43:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:43:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 12:43:00,752 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 12:43:00,753 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 12:43:00,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 12:43:00,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:43:00 BoogieIcfgContainer [2020-10-13 12:43:00,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 12:43:00,780 INFO L168 Benchmark]: Toolchain (without parser) took 25921.17 ms. Allocated memory was 144.7 MB in the beginning and 680.0 MB in the end (delta: 535.3 MB). Free memory was 102.5 MB in the beginning and 286.6 MB in the end (delta: -184.1 MB). Peak memory consumption was 351.2 MB. Max. memory is 7.1 GB. [2020-10-13 12:43:00,781 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 12:43:00,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.15 ms. Allocated memory was 144.7 MB in the beginning and 205.5 MB in the end (delta: 60.8 MB). Free memory was 102.3 MB in the beginning and 173.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-13 12:43:00,782 INFO L168 Benchmark]: Boogie Preprocessor took 109.19 ms. Allocated memory is still 205.5 MB. Free memory was 173.3 MB in the beginning and 168.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-10-13 12:43:00,783 INFO L168 Benchmark]: RCFGBuilder took 1136.89 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 168.8 MB in the beginning and 190.7 MB in the end (delta: -22.0 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. [2020-10-13 12:43:00,784 INFO L168 Benchmark]: TraceAbstraction took 24025.94 ms. Allocated memory was 234.9 MB in the beginning and 680.0 MB in the end (delta: 445.1 MB). Free memory was 190.7 MB in the beginning and 286.6 MB in the end (delta: -95.9 MB). Peak memory consumption was 349.2 MB. Max. memory is 7.1 GB. [2020-10-13 12:43:00,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 644.15 ms. Allocated memory was 144.7 MB in the beginning and 205.5 MB in the end (delta: 60.8 MB). Free memory was 102.3 MB in the beginning and 173.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.19 ms. Allocated memory is still 205.5 MB. Free memory was 173.3 MB in the beginning and 168.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1136.89 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 168.8 MB in the beginning and 190.7 MB in the end (delta: -22.0 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24025.94 ms. Allocated memory was 234.9 MB in the beginning and 680.0 MB in the end (delta: 445.1 MB). Free memory was 190.7 MB in the beginning and 286.6 MB in the end (delta: -95.9 MB). Peak memory consumption was 349.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L314] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L585] int pumpRunning = 0; [L586] int systemActive = 1; [L868] int cleanupTimeShifts = 4; [L941] int retValue_acc ; [L942] int tmp ; [L946] FCALL select_helpers() [L947] FCALL select_features() [L948] CALL, EXPR valid_product() [L859] int retValue_acc ; [L862] retValue_acc = 1 [L863] return (retValue_acc); [L948] RET, EXPR valid_product() [L948] tmp = valid_product() [L950] COND TRUE \read(tmp) [L952] FCALL setup() [L953] CALL runTest() [L935] CALL test() [L515] int splverifierCounter ; [L516] int tmp ; [L517] int tmp___0 ; [L518] int tmp___1 ; [L519] int tmp___2 ; [L522] splverifierCounter = 0 [L524] COND TRUE 1 [L526] COND TRUE splverifierCounter < 4 [L532] tmp = __VERIFIER_nondet_int() [L534] COND TRUE \read(tmp) [L536] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L536] RET waterRise() [L542] tmp___0 = __VERIFIER_nondet_int() [L544] COND FALSE !(\read(tmp___0)) [L552] tmp___2 = __VERIFIER_nondet_int() [L554] COND FALSE !(\read(tmp___2)) [L558] tmp___1 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___1) [L562] CALL stopSystem() [L784] COND FALSE !(\read(pumpRunning)) [L791] systemActive = 0 [L562] RET stopSystem() [L569] CALL timeShift() [L593] COND FALSE !(\read(pumpRunning)) [L600] COND FALSE !(\read(systemActive)) [L608] CALL __utac_acc__Specification3_spec__1() [L797] int tmp ; [L798] int tmp___0 ; [L799] int tmp___1 ; [L803] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L803] RET, EXPR isMethaneLevelCritical() [L803] tmp = isMethaneLevelCritical() [L805] COND FALSE !(\read(tmp)) [L809] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L809] RET, EXPR getWaterLevel() [L809] tmp___0 = getWaterLevel() [L811] COND TRUE tmp___0 == 2 [L813] CALL, EXPR isPumpRunning() [L717] int retValue_acc ; [L720] retValue_acc = pumpRunning [L721] return (retValue_acc); [L813] RET, EXPR isPumpRunning() [L813] tmp___1 = isPumpRunning() [L815] COND FALSE !(\read(tmp___1)) [L819] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 560 SDtfs, 990 SDslu, 273 SDs, 0 SdLazy, 1341 SolverSat, 621 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 188 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 78578 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...