/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:07:42,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:07:42,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:07:42,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:07:42,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:07:42,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:07:42,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:07:42,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:07:42,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:07:42,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:07:42,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:07:42,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:07:42,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:07:42,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:07:42,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:07:42,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:07:42,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:07:42,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:07:42,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:07:42,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:07:42,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:07:42,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:07:42,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:07:42,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:07:42,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:07:42,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:07:42,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:07:42,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:07:42,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:07:42,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:07:42,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:07:42,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:07:42,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:07:42,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:07:42,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:07:42,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:07:42,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:07:42,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:07:42,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:07:42,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:07:42,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:07:42,696 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 [2020-09-21 12:07:42,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:07:42,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:07:42,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:07:42,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:07:42,743 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:07:42,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:07:42,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:07:42,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:07:42,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:07:42,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:07:42,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:07:42,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:07:42,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:07:42,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:07:42,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:07:42,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:07:42,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:07:42,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:07:42,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:07:42,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:07:42,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:07:42,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:07:42,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:07:42,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:07:42,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:07:42,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:07:42,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:07:42,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:07:42,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:07:42,752 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:07:43,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:07:43,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:07:43,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:07:43,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:07:43,232 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:07:43,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-09-21 12:07:43,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defe8c085/84aca77ae928439fa00861a885531857/FLAG16d0fb638 [2020-09-21 12:07:43,933 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:07:43,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-09-21 12:07:43,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defe8c085/84aca77ae928439fa00861a885531857/FLAG16d0fb638 [2020-09-21 12:07:44,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/defe8c085/84aca77ae928439fa00861a885531857 [2020-09-21 12:07:44,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:07:44,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:07:44,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:44,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:07:44,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:07:44,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:44,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44, skipping insertion in model container [2020-09-21 12:07:44,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:44,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:07:44,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:07:44,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:44,824 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:07:44,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:44,956 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:07:44,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44 WrapperNode [2020-09-21 12:07:44,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:44,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:07:44,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:07:44,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:07:44,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:44,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:44,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:44,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:45,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:45,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:45,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (1/1) ... [2020-09-21 12:07:45,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:07:45,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:07:45,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:07:45,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:07:45,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (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 [2020-09-21 12:07:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:07:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:07:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:07:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:07:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:07:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:07:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:07:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:07:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:07:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:07:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:07:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:07:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:07:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:07:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:07:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:07:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:07:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:07:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:07:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:07:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:07:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:07:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:07:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:07:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:07:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:07:45,149 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:07:45,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:07:45,149 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:07:45,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:07:45,149 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:07:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:07:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:07:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:07:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:07:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:07:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:07:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:07:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:07:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:07:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:07:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:07:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:07:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:07:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:07:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:07:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:07:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:07:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:07:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:07:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:07:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:07:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:07:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:07:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:07:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:07:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:07:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:07:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:07:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:07:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:07:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:07:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:07:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:07:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:07:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:07:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:07:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:07:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:07:45,157 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:07:45,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:45,157 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:07:45,157 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:07:45,157 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:07:45,157 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:07:45,158 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:07:45,158 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:07:45,158 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:07:45,158 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:07:45,158 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:07:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:07:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:07:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:07:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:07:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:07:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:07:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:07:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:07:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:07:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:07:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:07:46,354 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:07:46,354 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:07:46,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:46 BoogieIcfgContainer [2020-09-21 12:07:46,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:07:46,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:07:46,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:07:46,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:07:46,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:07:44" (1/3) ... [2020-09-21 12:07:46,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9695252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:46, skipping insertion in model container [2020-09-21 12:07:46,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:44" (2/3) ... [2020-09-21 12:07:46,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9695252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:46, skipping insertion in model container [2020-09-21 12:07:46,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:46" (3/3) ... [2020-09-21 12:07:46,371 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-09-21 12:07:46,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:07:46,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:07:46,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:07:46,445 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:07:46,445 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:07:46,445 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:07:46,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:07:46,446 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:07:46,446 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:07:46,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:07:46,446 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:07:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-09-21 12:07:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:07:46,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:46,489 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] [2020-09-21 12:07:46,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:46,497 INFO L82 PathProgramCache]: Analyzing trace with hash 733672736, now seen corresponding path program 1 times [2020-09-21 12:07:46,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:46,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315534955] [2020-09-21 12:07:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:47,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:47,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:07:47,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:47,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-09-21 12:07:47,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:47,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:07:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:47,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-21 12:07:48,295 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:48,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:48,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-21 12:07:48,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:48,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:48,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:48,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:48,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:48,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:48,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:48,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:48,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:48,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:48,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:48,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:48,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:07:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:48,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:48,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:48,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:48,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:48,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:48,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:48,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:48,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315534955] [2020-09-21 12:07:48,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:48,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:07:48,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744398801] [2020-09-21 12:07:48,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:07:48,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:48,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:07:48,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:48,577 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-09-21 12:07:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:49,902 INFO L93 Difference]: Finished difference Result 352 states and 460 transitions. [2020-09-21 12:07:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:07:49,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:07:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:49,923 INFO L225 Difference]: With dead ends: 352 [2020-09-21 12:07:49,924 INFO L226 Difference]: Without dead ends: 190 [2020-09-21 12:07:49,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-21 12:07:50,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2020-09-21 12:07:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-21 12:07:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 182 transitions. [2020-09-21 12:07:50,051 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 182 transitions. Word has length 46 [2020-09-21 12:07:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:50,052 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 182 transitions. [2020-09-21 12:07:50,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:07:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 182 transitions. [2020-09-21 12:07:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:07:50,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:50,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:50,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:07:50,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1141201306, now seen corresponding path program 1 times [2020-09-21 12:07:50,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:50,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733246603] [2020-09-21 12:07:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:51,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:07:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-09-21 12:07:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:07:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:51,759 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:07:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:51,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:51,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:51,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:51,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:51,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:51,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:51,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:51,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:51,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:51,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:51,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:51,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:51,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:51,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:51,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:51,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:51,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:51,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:51,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:51,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:51,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:51,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:51,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:51,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:51,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:51,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733246603] [2020-09-21 12:07:51,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:51,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:51,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646098679] [2020-09-21 12:07:51,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:51,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:51,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:51,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:51,948 INFO L87 Difference]: Start difference. First operand 153 states and 182 transitions. Second operand 4 states. [2020-09-21 12:07:52,402 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:53,598 INFO L93 Difference]: Finished difference Result 275 states and 339 transitions. [2020-09-21 12:07:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:53,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:07:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:53,602 INFO L225 Difference]: With dead ends: 275 [2020-09-21 12:07:53,602 INFO L226 Difference]: Without dead ends: 174 [2020-09-21 12:07:53,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-21 12:07:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 144. [2020-09-21 12:07:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-21 12:07:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2020-09-21 12:07:53,651 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 47 [2020-09-21 12:07:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:53,651 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2020-09-21 12:07:53,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2020-09-21 12:07:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:07:53,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:53,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:53,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:07:53,654 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:53,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1705860394, now seen corresponding path program 1 times [2020-09-21 12:07:53,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:53,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701453915] [2020-09-21 12:07:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:53,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:54,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:54,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:54,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:07:54,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:07:54,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:07:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:07:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:55,017 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:55,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:55,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:55,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:55,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:55,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-21 12:07:55,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:55,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:55,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:55,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:55,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:55,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:55,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:55,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:55,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:55,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:55,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:55,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:55,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:55,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:55,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:55,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:55,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:55,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:55,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:55,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:55,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:55,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:55,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:55,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:55,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:55,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:55,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:55,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:55,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:07:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:55,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:55,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:55,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:55,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:55,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:55,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:55,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:55,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:55,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:55,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701453915] [2020-09-21 12:07:55,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:55,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:55,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260324529] [2020-09-21 12:07:55,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:55,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:55,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:55,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:55,243 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 4 states. [2020-09-21 12:07:55,543 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:57,391 INFO L93 Difference]: Finished difference Result 428 states and 532 transitions. [2020-09-21 12:07:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:57,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:07:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:57,400 INFO L225 Difference]: With dead ends: 428 [2020-09-21 12:07:57,401 INFO L226 Difference]: Without dead ends: 308 [2020-09-21 12:07:57,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-09-21 12:07:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 254. [2020-09-21 12:07:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-21 12:07:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 307 transitions. [2020-09-21 12:07:57,499 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 307 transitions. Word has length 52 [2020-09-21 12:07:57,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:57,499 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 307 transitions. [2020-09-21 12:07:57,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 307 transitions. [2020-09-21 12:07:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:07:57,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:57,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:57,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:07:57,502 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:57,502 INFO L82 PathProgramCache]: Analyzing trace with hash -986744431, now seen corresponding path program 1 times [2020-09-21 12:07:57,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:57,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513138812] [2020-09-21 12:07:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:57,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:07:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-21 12:07:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:07:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:07:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:07:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:58,938 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:58,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:58,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:58,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:07:59,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:59,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:59,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:59,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:59,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:59,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:59,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:59,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:59,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:59,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:59,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:59,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:59,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:59,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:59,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:59,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:59,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:59,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:59,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:59,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:59,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:59,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:59,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:59,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:59,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:59,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:07:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:59,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:59,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:59,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:59,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:07:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:59,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:59,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:59,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:07:59,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:59,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513138812] [2020-09-21 12:07:59,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:59,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:59,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042040001] [2020-09-21 12:07:59,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:59,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:59,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:59,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:59,124 INFO L87 Difference]: Start difference. First operand 254 states and 307 transitions. Second operand 8 states. [2020-09-21 12:07:59,507 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:00,497 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:08:00,869 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:08:01,178 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:08:01,914 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:02,324 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:03,495 INFO L93 Difference]: Finished difference Result 695 states and 909 transitions. [2020-09-21 12:08:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:08:03,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:08:03,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:03,500 INFO L225 Difference]: With dead ends: 695 [2020-09-21 12:08:03,500 INFO L226 Difference]: Without dead ends: 465 [2020-09-21 12:08:03,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:08:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-09-21 12:08:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 406. [2020-09-21 12:08:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-09-21 12:08:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 498 transitions. [2020-09-21 12:08:03,591 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 498 transitions. Word has length 57 [2020-09-21 12:08:03,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:03,592 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 498 transitions. [2020-09-21 12:08:03,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:08:03,592 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 498 transitions. [2020-09-21 12:08:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-21 12:08:03,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:03,594 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] [2020-09-21 12:08:03,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:08:03,595 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:03,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:03,595 INFO L82 PathProgramCache]: Analyzing trace with hash 557418004, now seen corresponding path program 1 times [2020-09-21 12:08:03,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:03,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245152919] [2020-09-21 12:08:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:04,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-21 12:08:04,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:08:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:08:04,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:08:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:08:04,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:04,904 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:04,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:08:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:04,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:04,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:04,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:04,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:04,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:04,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:04,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:04,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:04,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:04,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:04,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:04,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:04,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:04,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:04,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:04,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:05,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:05,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:08:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:08:05,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:08:05,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:08:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:08:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:08:05,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:08:05,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:08:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:08:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:08:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:08:05,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:08:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:08:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:08:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:05,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:08:05,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:08:05,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:05,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:05,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:05,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:08:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:05,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:05,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 12:08:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:05,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:08:05,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:08:05,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245152919] [2020-09-21 12:08:05,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:05,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:08:05,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599477574] [2020-09-21 12:08:05,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:08:05,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:05,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:08:05,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:08:05,411 INFO L87 Difference]: Start difference. First operand 406 states and 498 transitions. Second operand 8 states. [2020-09-21 12:08:06,591 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:06,949 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:08:07,292 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:07,613 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:08:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:08,622 INFO L93 Difference]: Finished difference Result 861 states and 1104 transitions. [2020-09-21 12:08:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:08:08,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-09-21 12:08:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:08,627 INFO L225 Difference]: With dead ends: 861 [2020-09-21 12:08:08,627 INFO L226 Difference]: Without dead ends: 479 [2020-09-21 12:08:08,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:08:08,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-09-21 12:08:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 419. [2020-09-21 12:08:08,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-09-21 12:08:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 512 transitions. [2020-09-21 12:08:08,729 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 512 transitions. Word has length 85 [2020-09-21 12:08:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:08,730 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 512 transitions. [2020-09-21 12:08:08,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:08:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 512 transitions. [2020-09-21 12:08:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-21 12:08:08,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:08,732 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] [2020-09-21 12:08:08,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:08:08,732 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:08,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:08,733 INFO L82 PathProgramCache]: Analyzing trace with hash 832177618, now seen corresponding path program 1 times [2020-09-21 12:08:08,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:08,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270393733] [2020-09-21 12:08:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:09,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:09,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-21 12:08:09,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:08:09,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:08:09,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-21 12:08:09,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,017 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:10,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:08:10,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:10,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:10,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:10,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:10,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:10,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:10,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:10,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:10,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:08:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:08:10,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:08:10,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:08:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:08:10,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:08:10,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:08:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:08:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:08:10,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:08:10,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:10,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:08:10,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:08:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:10,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:08:10,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:08:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:10,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:08:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:10,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:10,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 12:08:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:10,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:10,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:10,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:08:10,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270393733] [2020-09-21 12:08:10,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:10,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:08:10,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988829153] [2020-09-21 12:08:10,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:08:10,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:10,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:08:10,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:08:10,445 INFO L87 Difference]: Start difference. First operand 419 states and 512 transitions. Second operand 7 states. [2020-09-21 12:08:11,439 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:11,824 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:12,163 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:13,236 INFO L93 Difference]: Finished difference Result 888 states and 1157 transitions. [2020-09-21 12:08:13,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:08:13,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-09-21 12:08:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:13,241 INFO L225 Difference]: With dead ends: 888 [2020-09-21 12:08:13,242 INFO L226 Difference]: Without dead ends: 493 [2020-09-21 12:08:13,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:08:13,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-09-21 12:08:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 427. [2020-09-21 12:08:13,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-21 12:08:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 520 transitions. [2020-09-21 12:08:13,320 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 520 transitions. Word has length 85 [2020-09-21 12:08:13,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:13,320 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 520 transitions. [2020-09-21 12:08:13,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:08:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 520 transitions. [2020-09-21 12:08:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-21 12:08:13,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:13,322 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] [2020-09-21 12:08:13,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:08:13,323 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:13,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:13,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1512489423, now seen corresponding path program 1 times [2020-09-21 12:08:13,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:13,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481753878] [2020-09-21 12:08:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-21 12:08:14,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:08:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:08:14,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:08:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 12:08:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:14,634 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:14,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:14,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-21 12:08:14,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:08:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:14,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:14,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:14,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:14,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:14,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:14,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:14,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:08:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:14,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:14,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:08:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:08:14,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:08:14,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:08:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:08:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:08:14,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:08:14,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:08:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:08:14,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:08:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:08:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:14,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:08:14,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:08:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:14,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:08:14,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:08:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:14,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:14,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:08:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:14,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:14,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 12:08:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:14,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:14,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:14,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:14,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:08:14,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481753878] [2020-09-21 12:08:14,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:14,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:08:14,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332858003] [2020-09-21 12:08:14,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:08:14,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:14,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:08:15,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:08:15,003 INFO L87 Difference]: Start difference. First operand 427 states and 520 transitions. Second operand 7 states. [2020-09-21 12:08:15,345 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:15,926 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:17,695 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:19,711 INFO L93 Difference]: Finished difference Result 1576 states and 2100 transitions. [2020-09-21 12:08:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:08:19,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-09-21 12:08:19,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:19,720 INFO L225 Difference]: With dead ends: 1576 [2020-09-21 12:08:19,720 INFO L226 Difference]: Without dead ends: 1173 [2020-09-21 12:08:19,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:08:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-09-21 12:08:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1121. [2020-09-21 12:08:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-09-21 12:08:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1397 transitions. [2020-09-21 12:08:19,908 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1397 transitions. Word has length 85 [2020-09-21 12:08:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:19,909 INFO L479 AbstractCegarLoop]: Abstraction has 1121 states and 1397 transitions. [2020-09-21 12:08:19,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:08:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1397 transitions. [2020-09-21 12:08:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-21 12:08:19,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:19,911 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] [2020-09-21 12:08:19,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:08:19,911 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:19,912 INFO L82 PathProgramCache]: Analyzing trace with hash -745851657, now seen corresponding path program 1 times [2020-09-21 12:08:19,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:19,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684076627] [2020-09-21 12:08:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:20,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 12:08:20,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-21 12:08:20,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:08:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-21 12:08:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:21,292 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:21,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:21,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 12:08:21,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:08:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:21,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:21,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:21,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:21,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:21,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:21,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:21,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:08:21,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:21,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:21,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:21,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:21,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:21,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:08:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:21,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:08:21,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:21,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:21,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:21,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:08:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:08:21,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:08:21,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:08:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:08:21,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:08:21,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:08:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:08:21,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:21,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:08:21,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:21,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:21,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:21,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:21,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:21,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:08:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:21,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:08:21,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:21,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:21,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 12:08:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:21,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:21,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:08:21,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684076627] [2020-09-21 12:08:21,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:21,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:08:21,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161042029] [2020-09-21 12:08:21,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:08:21,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:21,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:08:21,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:08:21,711 INFO L87 Difference]: Start difference. First operand 1121 states and 1397 transitions. Second operand 9 states. [2020-09-21 12:08:22,145 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:23,154 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:23,467 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:23,786 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:24,104 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:24,535 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:26,895 INFO L93 Difference]: Finished difference Result 3346 states and 4360 transitions. [2020-09-21 12:08:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:08:26,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-21 12:08:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:26,912 INFO L225 Difference]: With dead ends: 3346 [2020-09-21 12:08:26,912 INFO L226 Difference]: Without dead ends: 2249 [2020-09-21 12:08:26,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:08:26,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2020-09-21 12:08:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2155. [2020-09-21 12:08:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-09-21 12:08:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2700 transitions. [2020-09-21 12:08:27,446 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2700 transitions. Word has length 89 [2020-09-21 12:08:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:27,448 INFO L479 AbstractCegarLoop]: Abstraction has 2155 states and 2700 transitions. [2020-09-21 12:08:27,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:08:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2700 transitions. [2020-09-21 12:08:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-21 12:08:27,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:27,452 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] [2020-09-21 12:08:27,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:08:27,453 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:27,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1174397627, now seen corresponding path program 1 times [2020-09-21 12:08:27,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:27,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486553743] [2020-09-21 12:08:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:08:27,517 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:08:27,517 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:08:27,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:08:27,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:08:27 BoogieIcfgContainer [2020-09-21 12:08:27,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:08:27,568 INFO L168 Benchmark]: Toolchain (without parser) took 43373.65 ms. Allocated memory was 141.0 MB in the beginning and 734.0 MB in the end (delta: 593.0 MB). Free memory was 102.2 MB in the beginning and 539.7 MB in the end (delta: -437.5 MB). Peak memory consumption was 155.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:27,568 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:08:27,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.34 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 173.9 MB in the end (delta: -72.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:27,573 INFO L168 Benchmark]: Boogie Preprocessor took 101.70 ms. Allocated memory is still 205.5 MB. Free memory was 173.9 MB in the beginning and 169.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:27,575 INFO L168 Benchmark]: RCFGBuilder took 1301.19 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 169.3 MB in the beginning and 191.0 MB in the end (delta: -21.7 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:27,576 INFO L168 Benchmark]: TraceAbstraction took 41203.43 ms. Allocated memory was 235.4 MB in the beginning and 734.0 MB in the end (delta: 498.6 MB). Free memory was 189.6 MB in the beginning and 539.7 MB in the end (delta: -350.1 MB). Peak memory consumption was 148.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:27,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.34 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 173.9 MB in the end (delta: -72.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.70 ms. Allocated memory is still 205.5 MB. Free memory was 173.9 MB in the beginning and 169.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1301.19 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 169.3 MB in the beginning and 191.0 MB in the end (delta: -21.7 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41203.43 ms. Allocated memory was 235.4 MB in the beginning and 734.0 MB in the end (delta: 498.6 MB). Free memory was 189.6 MB in the beginning and 539.7 MB in the end (delta: -350.1 MB). Peak memory consumption was 148.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 806]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int pumpRunning = 0; [L491] int systemActive = 1; [L811] int cleanupTimeShifts = 4; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; [L884] int retValue_acc ; [L885] int tmp ; [L889] FCALL select_helpers() [L890] FCALL select_features() [L891] CALL, EXPR valid_product() [L766] int retValue_acc ; [L769] retValue_acc = 1 [L770] return (retValue_acc); [L891] RET, EXPR valid_product() [L891] tmp = valid_product() [L893] COND TRUE \read(tmp) [L895] FCALL setup() [L896] CALL runTest() [L878] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp___0) [L444] CALL changeMethaneLevel() [L938] COND FALSE !(\read(methaneLevelCritical)) [L941] methaneLevelCritical = 1 [L444] RET changeMethaneLevel() [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND FALSE !(\read(tmp___2)) [L458] tmp___1 = __VERIFIER_nondet_int() [L460] COND FALSE !(\read(tmp___1)) [L469] CALL timeShift() [L498] COND FALSE !(\read(pumpRunning)) [L505] COND TRUE \read(systemActive) [L507] CALL processEnvironment() [L579] int tmp ; [L582] COND FALSE !(\read(pumpRunning)) [L597] CALL processEnvironment__wrappee__lowWaterSensor() [L553] int tmp ; [L556] COND FALSE !(\read(pumpRunning)) [L571] CALL processEnvironment__wrappee__highWaterSensor() [L527] int tmp ; [L530] COND TRUE ! pumpRunning [L532] CALL, EXPR isHighWaterLevel() [L676] int retValue_acc ; [L677] int tmp ; [L678] int tmp___0 ; [L682] CALL, EXPR isHighWaterSensorDry() [L988] int retValue_acc ; [L991] COND FALSE !(waterLevel < 2) [L995] retValue_acc = 0 [L996] return (retValue_acc); [L682] RET, EXPR isHighWaterSensorDry() [L682] tmp = isHighWaterSensorDry() [L684] COND FALSE !(\read(tmp)) [L687] tmp___0 = 1 [L689] retValue_acc = tmp___0 [L690] return (retValue_acc); [L532] RET, EXPR isHighWaterLevel() [L532] tmp = isHighWaterLevel() [L534] COND TRUE \read(tmp) [L536] CALL activatePump() [L607] pumpRunning = 1 [L536] RET activatePump() [L571] RET processEnvironment__wrappee__highWaterSensor() [L597] RET processEnvironment__wrappee__lowWaterSensor() [L507] RET processEnvironment() [L513] CALL __utac_acc__Specification1_spec__1() [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isMethaneLevelCritical() [L947] int retValue_acc ; [L950] retValue_acc = methaneLevelCritical [L951] return (retValue_acc); [L782] RET, EXPR isMethaneLevelCritical() [L782] tmp = isMethaneLevelCritical() [L784] COND TRUE \read(tmp) [L786] CALL, EXPR isPumpRunning() [L631] int retValue_acc ; [L634] retValue_acc = pumpRunning [L635] return (retValue_acc); [L786] RET, EXPR isPumpRunning() [L786] tmp___0 = isPumpRunning() [L788] COND TRUE \read(tmp___0) [L790] CALL __automaton_fail() [L806] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1190 SDtfs, 1995 SDslu, 981 SDs, 0 SdLazy, 4560 SolverSat, 1297 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2155occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 452 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 639 NumberOfCodeBlocks, 639 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 538 ConstructedInterpolants, 0 QuantifiedInterpolants, 164202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...