/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:25:53,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:25:53,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:25:53,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:25:53,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:25:53,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:25:53,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:25:53,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:25:53,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:25:53,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:25:53,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:25:53,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:25:53,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:25:53,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:25:53,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:25:53,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:25:53,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:25:53,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:25:53,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:25:53,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:25:53,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:25:53,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:25:53,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:25:53,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:25:53,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:25:53,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:25:53,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:25:53,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:25:53,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:25:53,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:25:53,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:25:53,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:25:53,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:25:53,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:25:53,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:25:53,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:25:53,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:25:53,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:25:53,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:25:53,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:25:53,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:25:53,821 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 [2020-09-24 21:25:53,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:25:53,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:25:53,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:25:53,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:25:53,869 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:25:53,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:25:53,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:25:53,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:25:53,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:25:53,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:25:53,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:25:53,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:25:53,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:25:53,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:25:53,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:25:53,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:25:53,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:25:53,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:25:53,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:25:53,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:25:53,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:25:53,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:25:53,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:25:53,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:25:53,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:25:53,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:25:53,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:25:53,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:25:53,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:25:53,875 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:25:54,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:25:54,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:25:54,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:25:54,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:25:54,381 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:25:54,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-09-24 21:25:54,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64910c3a1/b279ad438acb47a28acf8bc6cd50a12d/FLAG7e73f4ab8 [2020-09-24 21:25:55,071 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:25:55,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-09-24 21:25:55,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64910c3a1/b279ad438acb47a28acf8bc6cd50a12d/FLAG7e73f4ab8 [2020-09-24 21:25:55,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64910c3a1/b279ad438acb47a28acf8bc6cd50a12d [2020-09-24 21:25:55,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:25:55,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:25:55,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:25:55,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:25:55,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:25:55,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:25:55" (1/1) ... [2020-09-24 21:25:55,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a477604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:55, skipping insertion in model container [2020-09-24 21:25:55,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:25:55" (1/1) ... [2020-09-24 21:25:55,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:25:55,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:25:55,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:25:55,978 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:25:56,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:25:56,102 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:25:56,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56 WrapperNode [2020-09-24 21:25:56,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:25:56,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:25:56,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:25:56,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:25:56,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (1/1) ... [2020-09-24 21:25:56,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (1/1) ... [2020-09-24 21:25:56,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (1/1) ... [2020-09-24 21:25:56,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (1/1) ... [2020-09-24 21:25:56,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (1/1) ... [2020-09-24 21:25:56,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (1/1) ... [2020-09-24 21:25:56,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (1/1) ... [2020-09-24 21:25:56,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:25:56,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:25:56,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:25:56,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:25:56,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (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 [2020-09-24 21:25:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:25:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:25:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:25:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:25:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:25:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:25:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:25:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:25:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:25:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:25:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:25:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:25:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:25:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 21:25:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:25:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:25:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:25:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:25:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:25:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:25:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 21:25:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:25:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:25:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:25:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:25:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:25:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:25:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:25:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:25:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:25:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:25:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:25:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:25:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:25:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 21:25:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:25:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:25:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:25:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:25:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:25:56,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:25:56,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:25:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:25:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:25:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:25:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:25:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:25:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:25:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:25:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:25:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:25:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:25:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:25:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:25:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:25:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:25:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:25:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:25:56,299 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:25:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:25:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:25:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:25:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:25:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 21:25:56,300 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:25:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:25:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:25:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:25:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:25:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:25:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:25:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 21:25:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 21:25:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:25:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:25:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:25:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:25:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:25:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:25:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:25:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:25:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:25:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:25:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:25:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:25:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:25:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:25:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:25:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:25:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:25:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:25:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:25:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:25:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:25:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:25:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:25:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:25:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:25:57,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:25:57,602 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:25:57,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:25:57 BoogieIcfgContainer [2020-09-24 21:25:57,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:25:57,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:25:57,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:25:57,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:25:57,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:25:55" (1/3) ... [2020-09-24 21:25:57,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be26dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:25:57, skipping insertion in model container [2020-09-24 21:25:57,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:56" (2/3) ... [2020-09-24 21:25:57,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be26dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:25:57, skipping insertion in model container [2020-09-24 21:25:57,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:25:57" (3/3) ... [2020-09-24 21:25:57,618 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2020-09-24 21:25:57,630 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:25:57,641 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:25:57,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:25:57,691 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:25:57,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:25:57,692 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:25:57,692 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:25:57,692 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:25:57,692 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:25:57,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:25:57,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:25:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states. [2020-09-24 21:25:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:25:57,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:57,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:25:57,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:57,746 INFO L82 PathProgramCache]: Analyzing trace with hash 344061342, now seen corresponding path program 1 times [2020-09-24 21:25:57,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:57,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145618253] [2020-09-24 21:25:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:03,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:03,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 21:26:03,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:26:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 21:26:03,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:26:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:26:03,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 21:26:03,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-24 21:26:03,561 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:03,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:03,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:03,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-24 21:26:03,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:26:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:04,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:04,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:04,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:04,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:26:04,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:04,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:04,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:04,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:04,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:26:04,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:04,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:04,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:04,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:04,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:26:04,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:04,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:04,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:04,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:04,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:26:04,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:04,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:26:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:04,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:04,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:04,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:04,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:04,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:04,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 21:26:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:04,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:04,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:04,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:04,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:04,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:26:04,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145618253] [2020-09-24 21:26:04,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:26:04,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:26:04,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306943137] [2020-09-24 21:26:04,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:26:04,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:04,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:26:04,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:26:04,250 INFO L87 Difference]: Start difference. First operand 340 states. Second operand 4 states. [2020-09-24 21:26:04,830 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:26:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:26:07,258 INFO L93 Difference]: Finished difference Result 762 states and 911 transitions. [2020-09-24 21:26:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:26:07,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-24 21:26:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:26:07,283 INFO L225 Difference]: With dead ends: 762 [2020-09-24 21:26:07,283 INFO L226 Difference]: Without dead ends: 533 [2020-09-24 21:26:07,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:26:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-09-24 21:26:07,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 462. [2020-09-24 21:26:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-09-24 21:26:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 513 transitions. [2020-09-24 21:26:07,500 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 513 transitions. Word has length 142 [2020-09-24 21:26:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:26:07,501 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 513 transitions. [2020-09-24 21:26:07,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:26:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 513 transitions. [2020-09-24 21:26:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 21:26:07,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:26:07,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:26:07,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:26:07,519 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:26:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:26:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash -302472093, now seen corresponding path program 1 times [2020-09-24 21:26:07,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:26:07,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113696533] [2020-09-24 21:26:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:26:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:07,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:12,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 21:26:12,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:26:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:26:12,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:26:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:26:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 21:26:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:12,896 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:12,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:13,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 21:26:13,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:26:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:13,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:13,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:13,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:13,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:13,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:13,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:13,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:13,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:13,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:26:13,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:13,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:13,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:13,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:13,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:13,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 21:26:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:26:13,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:26:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:26:13,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:26:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:26:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 21:26:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:26:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:26:13,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:26:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:26:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:26:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:26:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:26:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:13,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:13,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:13,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:13,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-24 21:26:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:13,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:13,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:13,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-24 21:26:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:13,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:13,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:13,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:13,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:13,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:13,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:13,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:13,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:26:13,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113696533] [2020-09-24 21:26:13,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:26:13,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:26:13,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902587468] [2020-09-24 21:26:13,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:26:13,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:13,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:26:13,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:26:13,423 INFO L87 Difference]: Start difference. First operand 462 states and 513 transitions. Second operand 6 states. [2020-09-24 21:26:13,909 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:26:15,588 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:26:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:26:16,891 INFO L93 Difference]: Finished difference Result 1212 states and 1484 transitions. [2020-09-24 21:26:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:26:16,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-24 21:26:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:26:16,901 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 21:26:16,901 INFO L226 Difference]: Without dead ends: 860 [2020-09-24 21:26:16,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:26:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-09-24 21:26:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 717. [2020-09-24 21:26:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-09-24 21:26:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 815 transitions. [2020-09-24 21:26:17,046 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 815 transitions. Word has length 165 [2020-09-24 21:26:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:26:17,047 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 815 transitions. [2020-09-24 21:26:17,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:26:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 815 transitions. [2020-09-24 21:26:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 21:26:17,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:26:17,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:26:17,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:26:17,051 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:26:17,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:26:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2018319061, now seen corresponding path program 1 times [2020-09-24 21:26:17,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:26:17,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035349246] [2020-09-24 21:26:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:26:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:18,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 21:26:22,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:26:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-24 21:26:22,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:26:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:26:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 21:26:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:22,469 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:22,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:22,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-24 21:26:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:26:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:26:22,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:22,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:22,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:26:22,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:22,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:22,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 21:26:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:26:22,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:26:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:26:22,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:26:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:26:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:26:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 21:26:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:22,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:22,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:22,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 21:26:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:22,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:22,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:22,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:22,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:26:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:26:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:26:23,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035349246] [2020-09-24 21:26:23,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:26:23,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:26:23,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284568441] [2020-09-24 21:26:23,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:26:23,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:23,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:26:23,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:26:23,051 INFO L87 Difference]: Start difference. First operand 717 states and 815 transitions. Second operand 10 states. [2020-09-24 21:26:23,716 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:26:25,082 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:26:25,406 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:25,734 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:26:26,067 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:26,349 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:26:27,024 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:26:27,319 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:26:27,671 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:26:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:26:28,968 INFO L93 Difference]: Finished difference Result 847 states and 1004 transitions. [2020-09-24 21:26:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:26:28,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2020-09-24 21:26:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:26:28,977 INFO L225 Difference]: With dead ends: 847 [2020-09-24 21:26:28,978 INFO L226 Difference]: Without dead ends: 844 [2020-09-24 21:26:28,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:26:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-09-24 21:26:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 717. [2020-09-24 21:26:29,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-09-24 21:26:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 813 transitions. [2020-09-24 21:26:29,074 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 813 transitions. Word has length 161 [2020-09-24 21:26:29,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:26:29,075 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 813 transitions. [2020-09-24 21:26:29,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:26:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 813 transitions. [2020-09-24 21:26:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 21:26:29,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:26:29,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:26:29,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:26:29,080 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:26:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:26:29,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1938966038, now seen corresponding path program 1 times [2020-09-24 21:26:29,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:26:29,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875063144] [2020-09-24 21:26:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:26:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:29,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:34,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 21:26:34,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:26:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 21:26:34,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:26:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 21:26:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-24 21:26:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:34,492 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:34,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:34,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:34,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-24 21:26:34,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:26:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:34,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:34,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:34,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:34,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:34,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:34,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:34,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:34,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:34,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:34,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:26:34,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:34,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:34,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:34,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:34,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:34,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:34,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:34,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 21:26:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:34,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:26:34,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:26:34,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 21:26:34,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:26:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:26:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 21:26:35,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:26:35,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 21:26:35,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:26:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:35,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:26:35,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:26:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:26:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:26:35,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:35,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:26:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 21:26:35,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:35,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:26:35,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 21:26:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 21:26:35,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:35,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:35,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:35,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:35,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:35,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 21:26:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:35,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:26:35,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:35,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 21:26:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:35,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:26:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:35,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-24 21:26:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:35,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:35,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:26:35,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:26:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-24 21:26:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:35,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:35,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:35,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:26:35,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875063144] [2020-09-24 21:26:35,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:26:35,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:26:35,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814715213] [2020-09-24 21:26:35,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:26:35,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:35,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:26:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:26:35,232 INFO L87 Difference]: Start difference. First operand 717 states and 813 transitions. Second operand 10 states. [2020-09-24 21:26:35,667 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:26:37,084 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-24 21:26:37,646 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-24 21:26:37,970 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:38,291 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:26:38,577 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:39,724 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:26:40,030 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:26:40,399 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:26:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:26:41,874 INFO L93 Difference]: Finished difference Result 1858 states and 2321 transitions. [2020-09-24 21:26:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:26:41,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 212 [2020-09-24 21:26:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:26:41,883 INFO L225 Difference]: With dead ends: 1858 [2020-09-24 21:26:41,883 INFO L226 Difference]: Without dead ends: 1251 [2020-09-24 21:26:41,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:26:41,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-09-24 21:26:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1131. [2020-09-24 21:26:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2020-09-24 21:26:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1355 transitions. [2020-09-24 21:26:42,037 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1355 transitions. Word has length 212 [2020-09-24 21:26:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:26:42,038 INFO L479 AbstractCegarLoop]: Abstraction has 1131 states and 1355 transitions. [2020-09-24 21:26:42,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:26:42,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1355 transitions. [2020-09-24 21:26:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 21:26:42,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:26:42,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:26:42,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:26:42,048 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:26:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:26:42,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1073017401, now seen corresponding path program 1 times [2020-09-24 21:26:42,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:26:42,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465819357] [2020-09-24 21:26:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:26:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:42,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking...