/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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_spec3_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:47:36,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:47:36,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:47:36,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:47:36,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:47:36,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:47:36,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:47:36,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:47:36,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:47:36,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:47:36,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:47:36,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:47:36,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:47:36,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:47:36,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:47:36,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:47:36,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:47:36,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:47:36,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:47:36,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:47:36,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:47:36,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:47:36,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:47:36,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:47:36,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:47:36,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:47:36,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:47:36,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:47:36,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:47:36,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:47:36,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:47:36,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:47:36,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:47:36,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:47:36,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:47:36,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:47:36,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:47:36,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:47:36,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:47:36,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:47:36,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:47:36,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:47:36,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:47:36,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:47:36,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:47:36,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:47:36,860 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:47:36,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:47:36,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:47:36,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:47:36,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:47:36,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:47:36,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:47:36,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:47:36,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:47:36,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:47:36,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:47:36,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:47:36,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:47:36,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:47:36,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:47:36,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:47:36,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:47:36,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:47:36,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:47:36,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:47:36,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:47:36,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:47:36,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:47:36,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:47:36,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:47:36,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:47:37,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:47:37,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:47:37,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:47:37,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:47:37,331 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:47:37,333 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c [2020-09-24 15:47:37,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc470e08/4f2f353b275147d7a20b05947330e13e/FLAG313d134cf [2020-09-24 15:47:38,105 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:47:38,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c [2020-09-24 15:47:38,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc470e08/4f2f353b275147d7a20b05947330e13e/FLAG313d134cf [2020-09-24 15:47:38,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc470e08/4f2f353b275147d7a20b05947330e13e [2020-09-24 15:47:38,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:47:38,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:47:38,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:47:38,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:47:38,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:47:38,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:47:38" (1/1) ... [2020-09-24 15:47:38,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:38, skipping insertion in model container [2020-09-24 15:47:38,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:47:38" (1/1) ... [2020-09-24 15:47:38,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:47:38,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:47:38,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:47:38,920 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:47:39,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:47:39,047 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:47:39,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39 WrapperNode [2020-09-24 15:47:39,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:47:39,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:47:39,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:47:39,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:47:39,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (1/1) ... [2020-09-24 15:47:39,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (1/1) ... [2020-09-24 15:47:39,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (1/1) ... [2020-09-24 15:47:39,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (1/1) ... [2020-09-24 15:47:39,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (1/1) ... [2020-09-24 15:47:39,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (1/1) ... [2020-09-24 15:47:39,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (1/1) ... [2020-09-24 15:47:39,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:47:39,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:47:39,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:47:39,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:47:39,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:47:39,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:47:39,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:47:39,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 15:47:39,225 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 15:47:39,225 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 15:47:39,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 15:47:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 15:47:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:47:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 15:47:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 15:47:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 15:47:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 15:47:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 15:47:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 15:47:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 15:47:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 15:47:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 15:47:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 15:47:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:47:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 15:47:39,229 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 15:47:39,229 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 15:47:39,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 15:47:39,229 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 15:47:39,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 15:47:39,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 15:47:39,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 15:47:39,230 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 15:47:39,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 15:47:39,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 15:47:39,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 15:47:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 15:47:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 15:47:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 15:47:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 15:47:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 15:47:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 15:47:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 15:47:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 15:47:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 15:47:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 15:47:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 15:47:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 15:47:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:47:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:47:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 15:47:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 15:47:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 15:47:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 15:47:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 15:47:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 15:47:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 15:47:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 15:47:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 15:47:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 15:47:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 15:47:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 15:47:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 15:47:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:47:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 15:47:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:47:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:47:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 15:47:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:47:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:47:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:47:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:47:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 15:47:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:47:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 15:47:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 15:47:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:47:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 15:47:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 15:47:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:47:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 15:47:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 15:47:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 15:47:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 15:47:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 15:47:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 15:47:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:47:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 15:47:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 15:47:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 15:47:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 15:47:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 15:47:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 15:47:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 15:47:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 15:47:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 15:47:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 15:47:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 15:47:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 15:47:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 15:47:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 15:47:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 15:47:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:47:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:47:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:47:40,534 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:47:40,535 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 15:47:40,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:40 BoogieIcfgContainer [2020-09-24 15:47:40,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:47:40,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:47:40,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:47:40,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:47:40,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:47:38" (1/3) ... [2020-09-24 15:47:40,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793f602b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:40, skipping insertion in model container [2020-09-24 15:47:40,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:47:39" (2/3) ... [2020-09-24 15:47:40,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793f602b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:40, skipping insertion in model container [2020-09-24 15:47:40,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:40" (3/3) ... [2020-09-24 15:47:40,553 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2020-09-24 15:47:40,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:47:40,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:47:40,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:47:40,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:47:40,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:47:40,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:47:40,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:47:40,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:47:40,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:47:40,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:47:40,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:47:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2020-09-24 15:47:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 15:47:40,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:40,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:40,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:40,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:40,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1296502413, now seen corresponding path program 1 times [2020-09-24 15:47:40,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:40,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590449963] [2020-09-24 15:47:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 15:47:41,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:47:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 15:47:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:41,601 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,639 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,640 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,640 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:41,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,758 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,759 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:41,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:41,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,764 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,765 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,765 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,765 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:41,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:41,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:41,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,770 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,770 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,771 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,771 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:41,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:41,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:41,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:47:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,783 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,783 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,784 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,784 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:41,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:47:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,790 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,790 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:41,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:41,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:41,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:47:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:41,797 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:41,797 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:41,797 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:41,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:41,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:41,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:41,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:41,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:41,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:41,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:47:41,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590449963] [2020-09-24 15:47:41,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:41,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:47:41,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633795747] [2020-09-24 15:47:41,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:47:41,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:41,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:47:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:41,862 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 3 states. [2020-09-24 15:47:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:43,581 INFO L93 Difference]: Finished difference Result 576 states and 686 transitions. [2020-09-24 15:47:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:47:43,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 15:47:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:43,611 INFO L225 Difference]: With dead ends: 576 [2020-09-24 15:47:43,611 INFO L226 Difference]: Without dead ends: 348 [2020-09-24 15:47:43,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-09-24 15:47:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 302. [2020-09-24 15:47:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-09-24 15:47:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 332 transitions. [2020-09-24 15:47:43,736 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 332 transitions. Word has length 153 [2020-09-24 15:47:43,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:43,737 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 332 transitions. [2020-09-24 15:47:43,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:47:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 332 transitions. [2020-09-24 15:47:43,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 15:47:43,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:43,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:43,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:47:43,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:43,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1707767493, now seen corresponding path program 1 times [2020-09-24 15:47:43,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:43,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769221142] [2020-09-24 15:47:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:43,833 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:43,833 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:43,833 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:43,834 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:43,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 15:47:43,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:47:43,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 15:47:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 15:47:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,227 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:44,240 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:44,240 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:44,241 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:44,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:44,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:44,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:44,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:44,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:44,299 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:44,299 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:44,299 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:44,299 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:44,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:44,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:44,304 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:44,305 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:44,305 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:44,305 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:44,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:44,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:44,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:44,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:44,311 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:44,311 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:44,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:44,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:44,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:44,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:44,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:44,317 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:44,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:44,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:44,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:44,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:44,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 15:47:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:44,321 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:44,322 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:44,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:44,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:44,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:44,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:44,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 15:47:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:44,328 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:44,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:44,329 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:44,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:44,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:44,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:44,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:47:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:44,334 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:44,334 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:44,335 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:44,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:44,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:44,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:44,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:47:44,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769221142] [2020-09-24 15:47:44,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:44,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:47:44,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769950320] [2020-09-24 15:47:44,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:47:44,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:44,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:47:44,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:47:44,370 INFO L87 Difference]: Start difference. First operand 302 states and 332 transitions. Second operand 4 states. [2020-09-24 15:47:45,091 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:47:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:46,493 INFO L93 Difference]: Finished difference Result 483 states and 549 transitions. [2020-09-24 15:47:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:47:46,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 15:47:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:46,502 INFO L225 Difference]: With dead ends: 483 [2020-09-24 15:47:46,503 INFO L226 Difference]: Without dead ends: 331 [2020-09-24 15:47:46,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:47:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-09-24 15:47:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 292. [2020-09-24 15:47:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-09-24 15:47:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 319 transitions. [2020-09-24 15:47:46,557 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 319 transitions. Word has length 154 [2020-09-24 15:47:46,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:46,557 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 319 transitions. [2020-09-24 15:47:46,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:47:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 319 transitions. [2020-09-24 15:47:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 15:47:46,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:46,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:46,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:47:46,561 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:46,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash 359507624, now seen corresponding path program 1 times [2020-09-24 15:47:46,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:46,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415866668] [2020-09-24 15:47:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:46,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-24 15:47:46,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -42 [2020-09-24 15:47:46,680 FATAL L256 erpolLogProxyWrapper]: Difference in width: 42 [2020-09-24 15:47:46,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:46,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 15:47:46,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:46,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:47:46,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 15:47:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:47:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:47,074 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,087 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,087 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,088 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:47,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:47,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:47,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,145 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,145 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,146 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:47,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:47,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:47,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,152 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,152 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,152 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:47,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:47,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:47,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,158 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:47,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:47,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:47,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,165 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,166 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:47,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:47,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:47,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:47,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 15:47:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,183 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,184 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 15:47:47,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:47,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 15:47:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 15:47:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,191 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,191 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,191 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,191 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:47,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:47,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 15:47:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,197 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,198 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,198 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:47,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:47,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:47,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:47,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:47,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 15:47:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:47,205 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:47,206 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:47,206 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:47,206 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:47,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:47,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:47,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:47:47,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415866668] [2020-09-24 15:47:47,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:47,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:47:47,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088430043] [2020-09-24 15:47:47,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:47:47,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:47,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:47:47,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:47:47,330 INFO L87 Difference]: Start difference. First operand 292 states and 319 transitions. Second operand 5 states. [2020-09-24 15:47:47,855 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:50,230 INFO L93 Difference]: Finished difference Result 730 states and 850 transitions. [2020-09-24 15:47:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:47:50,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-24 15:47:50,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:50,238 INFO L225 Difference]: With dead ends: 730 [2020-09-24 15:47:50,238 INFO L226 Difference]: Without dead ends: 548 [2020-09-24 15:47:50,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:47:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-09-24 15:47:50,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 464. [2020-09-24 15:47:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-09-24 15:47:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 519 transitions. [2020-09-24 15:47:50,328 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 519 transitions. Word has length 167 [2020-09-24 15:47:50,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:50,329 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 519 transitions. [2020-09-24 15:47:50,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:47:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 519 transitions. [2020-09-24 15:47:50,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 15:47:50,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:50,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:50,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:47:50,334 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:50,334 INFO L82 PathProgramCache]: Analyzing trace with hash -585794347, now seen corresponding path program 1 times [2020-09-24 15:47:50,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:50,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679774096] [2020-09-24 15:47:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:50,437 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:50,437 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:50,437 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:50,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 15:47:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:47:50,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:47:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 15:47:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 15:47:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:50,853 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:50,916 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:50,916 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:50,917 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:50,917 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:50,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:50,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:50,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 15:47:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:50,975 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:50,975 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:50,976 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:50,976 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:50,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:50,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:50,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:50,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:50,982 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:50,982 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:50,982 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:50,983 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:50,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:50,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:50,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:50,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:50,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:50,988 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:50,989 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:50,989 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:50,989 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:50,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:50,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:50,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:50,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:50,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:50,995 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:50,995 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:50,995 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:50,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:50,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:50,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:50,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:51,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 15:47:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:51,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:51,020 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:51,020 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:51,021 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:51,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:47:51,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:51,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:47:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:51,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 15:47:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:51,027 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:51,027 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:51,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:51,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:51,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:51,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:51,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:51,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:51,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:47:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:51,045 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:51,046 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:51,046 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:51,046 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:47:51,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:47:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 15:47:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:51,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:51,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:51,076 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:51,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:47:51,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679774096] [2020-09-24 15:47:51,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:51,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:47:51,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804895759] [2020-09-24 15:47:51,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:47:51,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:51,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:47:51,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:47:51,119 INFO L87 Difference]: Start difference. First operand 464 states and 519 transitions. Second operand 9 states. [2020-09-24 15:47:51,673 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:53,890 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:54,213 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:54,643 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:55,019 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:55,343 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:55,669 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:56,026 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:57,552 INFO L93 Difference]: Finished difference Result 1274 states and 1576 transitions. [2020-09-24 15:47:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:47:57,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-24 15:47:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:57,564 INFO L225 Difference]: With dead ends: 1274 [2020-09-24 15:47:57,564 INFO L226 Difference]: Without dead ends: 920 [2020-09-24 15:47:57,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:47:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-24 15:47:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 789. [2020-09-24 15:47:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-09-24 15:47:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 912 transitions. [2020-09-24 15:47:57,737 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 912 transitions. Word has length 172 [2020-09-24 15:47:57,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:57,737 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 912 transitions. [2020-09-24 15:47:57,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:47:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 912 transitions. [2020-09-24 15:47:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 15:47:57,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:57,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:57,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:47:57,746 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:57,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1663706585, now seen corresponding path program 1 times [2020-09-24 15:47:57,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:57,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802990115] [2020-09-24 15:47:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:47:57,870 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:47:57,870 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:47:57,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:47:57,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:47:57 BoogieIcfgContainer [2020-09-24 15:47:57,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:47:57,928 INFO L168 Benchmark]: Toolchain (without parser) took 19604.78 ms. Allocated memory was 139.5 MB in the beginning and 572.5 MB in the end (delta: 433.1 MB). Free memory was 101.9 MB in the beginning and 170.1 MB in the end (delta: -68.1 MB). Peak memory consumption was 364.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:57,932 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:47:57,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.30 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 170.3 MB in the end (delta: -69.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:57,943 INFO L168 Benchmark]: Boogie Preprocessor took 97.61 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 166.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:57,947 INFO L168 Benchmark]: RCFGBuilder took 1396.42 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.2 MB in the beginning and 171.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:57,948 INFO L168 Benchmark]: TraceAbstraction took 17379.64 ms. Allocated memory was 236.5 MB in the beginning and 572.5 MB in the end (delta: 336.1 MB). Free memory was 170.4 MB in the beginning and 170.1 MB in the end (delta: 354.5 kB). Peak memory consumption was 336.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:57,953 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 722.30 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 170.3 MB in the end (delta: -69.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.61 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 166.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1396.42 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.2 MB in the beginning and 171.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17379.64 ms. Allocated memory was 236.5 MB in the beginning and 572.5 MB in the end (delta: 336.1 MB). Free memory was 170.4 MB in the beginning and 170.1 MB in the end (delta: 354.5 kB). Peak memory consumption was 336.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1013]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L587] int waterLevel = 1; [L588] int methaneLevelCritical = 0; [L694] int pumpRunning = 0; [L695] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L941] int splverifierCounter ; [L942] int tmp ; [L943] int tmp___0 ; [L944] int tmp___1 ; [L945] int tmp___2 ; [L948] splverifierCounter = 0 [L950] COND TRUE 1 [L952] COND TRUE splverifierCounter < 4 [L958] tmp = __VERIFIER_nondet_int() [L960] COND TRUE \read(tmp) [L962] CALL waterRise() [L605] COND TRUE waterLevel < 2 [L606] waterLevel = waterLevel + 1 [L962] RET waterRise() [L968] tmp___0 = __VERIFIER_nondet_int() [L970] COND FALSE !(\read(tmp___0)) [L978] tmp___2 = __VERIFIER_nondet_int() [L980] COND FALSE !(\read(tmp___2)) [L986] tmp___1 = __VERIFIER_nondet_int() [L988] COND TRUE \read(tmp___1) [L990] CALL stopSystem() [L920] COND FALSE !(\read(pumpRunning)) [L927] systemActive = 0 [L990] RET stopSystem() [L997] CALL timeShift() [L701] COND FALSE !(\read(pumpRunning)) [L708] COND FALSE !(\read(systemActive)) [L716] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L626] int retValue_acc ; [L629] retValue_acc = methaneLevelCritical [L630] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L658] int retValue_acc ; [L661] retValue_acc = waterLevel [L662] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L834] int retValue_acc ; [L837] retValue_acc = pumpRunning [L838] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L1013] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 665 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1164 SDtfs, 1512 SDslu, 916 SDs, 0 SdLazy, 2671 SolverSat, 522 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=789occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 300 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 245972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...