/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:35:37,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:35:37,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:35:37,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:35:37,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:35:37,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:35:37,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:35:37,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:35:37,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:35:37,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:35:37,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:35:37,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:35:37,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:35:37,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:35:37,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:35:37,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:35:37,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:35:37,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:35:37,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:35:37,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:35:37,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:35:37,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:35:37,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:35:37,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:35:37,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:35:37,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:35:37,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:35:37,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:35:37,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:35:37,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:35:37,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:35:37,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:35:37,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:35:37,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:35:37,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:35:37,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:35:37,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:35:37,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:35:37,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:35:37,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:35:37,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:35:37,244 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 23:35:37,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:35:37,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:35:37,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:35:37,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:35:37,310 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:35:37,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:35:37,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:35:37,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:35:37,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:35:37,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:35:37,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:35:37,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:35:37,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:35:37,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:35:37,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:35:37,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:35:37,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:35:37,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:35:37,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:35:37,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:35:37,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:35:37,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:35:37,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:35:37,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:35:37,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:35:37,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:35:37,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:35:37,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:35:37,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:35:37,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:35:37,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:35:37,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:35:37,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:35:37,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:35:37,791 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:35:37,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-09-24 23:35:37,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af8bdee51/301630961ad34ce8916e6853fa88c93d/FLAGa44b59002 [2020-09-24 23:35:38,472 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:35:38,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-09-24 23:35:38,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af8bdee51/301630961ad34ce8916e6853fa88c93d/FLAGa44b59002 [2020-09-24 23:35:38,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af8bdee51/301630961ad34ce8916e6853fa88c93d [2020-09-24 23:35:38,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:35:38,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:35:38,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:35:38,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:35:38,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:35:38,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:35:38" (1/1) ... [2020-09-24 23:35:38,771 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 11:35:38, skipping insertion in model container [2020-09-24 23:35:38,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:35:38" (1/1) ... [2020-09-24 23:35:38,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:35:38,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:35:39,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:35:39,509 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:35:39,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:35:39,667 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:35:39,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39 WrapperNode [2020-09-24 23:35:39,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:35:39,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:35:39,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:35:39,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:35:39,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (1/1) ... [2020-09-24 23:35:39,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (1/1) ... [2020-09-24 23:35:39,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (1/1) ... [2020-09-24 23:35:39,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (1/1) ... [2020-09-24 23:35:39,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (1/1) ... [2020-09-24 23:35:39,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (1/1) ... [2020-09-24 23:35:39,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (1/1) ... [2020-09-24 23:35:39,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:35:39,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:35:39,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:35:39,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:35:39,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (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 23:35:39,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:35:39,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:35:39,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 23:35:39,859 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 23:35:39,859 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 23:35:39,860 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 23:35:39,860 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 23:35:39,860 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 23:35:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 23:35:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 23:35:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 23:35:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 23:35:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 23:35:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 23:35:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 23:35:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 23:35:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 23:35:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 23:35:39,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 23:35:39,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 23:35:39,864 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 23:35:39,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 23:35:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 23:35:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 23:35:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 23:35:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 23:35:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 23:35:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:35:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:35:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:35:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 23:35:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 23:35:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 23:35:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 23:35:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:35:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:35:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 23:35:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:35:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 23:35:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 23:35:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:35:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 23:35:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 23:35:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:35:41,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:35:41,013 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 23:35:41,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:35:41 BoogieIcfgContainer [2020-09-24 23:35:41,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:35:41,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:35:41,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:35:41,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:35:41,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:35:38" (1/3) ... [2020-09-24 23:35:41,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3160f483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:35:41, skipping insertion in model container [2020-09-24 23:35:41,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:39" (2/3) ... [2020-09-24 23:35:41,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3160f483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:35:41, skipping insertion in model container [2020-09-24 23:35:41,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:35:41" (3/3) ... [2020-09-24 23:35:41,030 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product27.cil.c [2020-09-24 23:35:41,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:35:41,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:35:41,078 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:35:41,110 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:35:41,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:35:41,111 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:35:41,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:35:41,111 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:35:41,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:35:41,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:35:41,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:35:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-09-24 23:35:41,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 23:35:41,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:35:41,158 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 23:35:41,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:35:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:35:41,167 INFO L82 PathProgramCache]: Analyzing trace with hash 196536289, now seen corresponding path program 1 times [2020-09-24 23:35:41,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:35:41,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308389473] [2020-09-24 23:35:41,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:35:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:43,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:46,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:46,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 23:35:46,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:35:46,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 23:35:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:35:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 23:35:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 23:35:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 23:35:47,014 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:35:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:35:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:47,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:47,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:35:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 23:35:47,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:35:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:47,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:35:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:47,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:47,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:47,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:35:47,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:35:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:35:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:47,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:47,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:47,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:35:47,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:35:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:35:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:47,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:47,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:47,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:35:47,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:35:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:35:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:35:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:47,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:47,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:47,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:47,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:35:47,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:35:47,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 23:35:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:47,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:47,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:47,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:35:47,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:35:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:35:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 23:35:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:47,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:47,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:47,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:35:47,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:35:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 23:35:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:47,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:47,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:47,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:35:47,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:35:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:35:47,586 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 23:35:47,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308389473] [2020-09-24 23:35:47,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:35:47,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:35:47,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307478758] [2020-09-24 23:35:47,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:35:47,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:35:47,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:35:47,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:35:47,622 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 4 states. [2020-09-24 23:35:48,234 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:35:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:35:50,093 INFO L93 Difference]: Finished difference Result 610 states and 742 transitions. [2020-09-24 23:35:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:35:50,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-09-24 23:35:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:35:50,118 INFO L225 Difference]: With dead ends: 610 [2020-09-24 23:35:50,118 INFO L226 Difference]: Without dead ends: 429 [2020-09-24 23:35:50,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 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 23:35:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-09-24 23:35:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 366. [2020-09-24 23:35:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-09-24 23:35:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 407 transitions. [2020-09-24 23:35:50,269 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 407 transitions. Word has length 153 [2020-09-24 23:35:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:35:50,270 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 407 transitions. [2020-09-24 23:35:50,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:35:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 407 transitions. [2020-09-24 23:35:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 23:35:50,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:35:50,276 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] [2020-09-24 23:35:50,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:35:50,277 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:35:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:35:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1183316893, now seen corresponding path program 1 times [2020-09-24 23:35:50,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:35:50,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048803578] [2020-09-24 23:35:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:35:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:53,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:53,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 23:35:53,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:35:53,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3097 [2020-09-24 23:35:53,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:35:53,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 23:35:53,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 23:35:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:53,740 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:35:53,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:35:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:53,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:53,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:35:53,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 23:35:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 23:35:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:35:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:54,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:35:54,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:35:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:35:54,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:35:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:54,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:35:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:35:54,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:35:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:35:54,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:35:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 23:35:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:35:54,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:35:54,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:35:54,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:35:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:35:54,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:35:54,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 23:35:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:35:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:35:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:35:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 23:35:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:35:54,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:35:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:35:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:35:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 23:35:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:54,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:35:54,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:35:54,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:35:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:35:54,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:35:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:35:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:35:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:35:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:35:54,200 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 23:35:54,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048803578] [2020-09-24 23:35:54,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:35:54,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 23:35:54,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967948630] [2020-09-24 23:35:54,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:35:54,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:35:54,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:35:54,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:35:54,205 INFO L87 Difference]: Start difference. First operand 366 states and 407 transitions. Second operand 9 states. [2020-09-24 23:35:54,779 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:35:56,607 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:35:57,198 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-24 23:35:57,546 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:35:57,895 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:35:58,172 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:35:58,507 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:35:58,809 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 23:35:59,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:35:59,874 INFO L93 Difference]: Finished difference Result 1046 states and 1318 transitions. [2020-09-24 23:35:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:35:59,878 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-09-24 23:35:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:35:59,888 INFO L225 Difference]: With dead ends: 1046 [2020-09-24 23:35:59,888 INFO L226 Difference]: Without dead ends: 790 [2020-09-24 23:35:59,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:35:59,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-09-24 23:36:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 609. [2020-09-24 23:36:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-09-24 23:36:00,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 705 transitions. [2020-09-24 23:36:00,039 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 705 transitions. Word has length 162 [2020-09-24 23:36:00,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:36:00,040 INFO L479 AbstractCegarLoop]: Abstraction has 609 states and 705 transitions. [2020-09-24 23:36:00,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:36:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 705 transitions. [2020-09-24 23:36:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 23:36:00,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:36:00,047 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 23:36:00,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:36:00,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:36:00,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:36:00,048 INFO L82 PathProgramCache]: Analyzing trace with hash -593950700, now seen corresponding path program 1 times [2020-09-24 23:36:00,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:36:00,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548635115] [2020-09-24 23:36:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:36:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:00,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 23:36:05,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:36:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 23:36:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 23:36:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:05,527 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:36:05,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:36:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:36:05,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 23:36:05,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:36:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:36:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:05,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:05,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:05,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:36:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:05,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:05,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:05,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:05,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:36:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:05,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:36:05,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:05,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:05,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:36:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:05,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 23:36:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:36:05,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:05,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:05,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:36:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 23:36:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:36:05,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:36:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:05,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:36:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:05,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:05,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 23:36:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:05,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:05,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:05,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 23:36:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:05,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:05,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 23:36:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:05,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:06,052 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 23:36:06,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548635115] [2020-09-24 23:36:06,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:36:06,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:36:06,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529018109] [2020-09-24 23:36:06,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:36:06,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:36:06,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:36:06,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:36:06,056 INFO L87 Difference]: Start difference. First operand 609 states and 705 transitions. Second operand 6 states. [2020-09-24 23:36:06,759 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:36:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:36:07,606 INFO L93 Difference]: Finished difference Result 979 states and 1180 transitions. [2020-09-24 23:36:07,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:36:07,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-24 23:36:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:36:07,616 INFO L225 Difference]: With dead ends: 979 [2020-09-24 23:36:07,616 INFO L226 Difference]: Without dead ends: 459 [2020-09-24 23:36:07,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:36:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-09-24 23:36:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 433. [2020-09-24 23:36:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-24 23:36:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 472 transitions. [2020-09-24 23:36:07,673 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 472 transitions. Word has length 167 [2020-09-24 23:36:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:36:07,674 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 472 transitions. [2020-09-24 23:36:07,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:36:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 472 transitions. [2020-09-24 23:36:07,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 23:36:07,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:36:07,678 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] [2020-09-24 23:36:07,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:36:07,678 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:36:07,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:36:07,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1541185143, now seen corresponding path program 1 times [2020-09-24 23:36:07,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:36:07,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234921995] [2020-09-24 23:36:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:36:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:36:07,742 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:36:07,742 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:36:07,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:36:07,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:36:07 BoogieIcfgContainer [2020-09-24 23:36:07,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:36:07,774 INFO L168 Benchmark]: Toolchain (without parser) took 29021.95 ms. Allocated memory was 143.1 MB in the beginning and 600.8 MB in the end (delta: 457.7 MB). Free memory was 98.7 MB in the beginning and 397.8 MB in the end (delta: -299.1 MB). Peak memory consumption was 158.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:07,775 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 143.1 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:36:07,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 907.75 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 98.1 MB in the beginning and 166.1 MB in the end (delta: -68.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:07,777 INFO L168 Benchmark]: Boogie Preprocessor took 101.54 ms. Allocated memory is still 199.8 MB. Free memory was 166.1 MB in the beginning and 162.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:07,778 INFO L168 Benchmark]: RCFGBuilder took 1250.12 ms. Allocated memory was 199.8 MB in the beginning and 227.0 MB in the end (delta: 27.3 MB). Free memory was 162.4 MB in the beginning and 171.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 88.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:07,779 INFO L168 Benchmark]: TraceAbstraction took 26750.19 ms. Allocated memory was 227.0 MB in the beginning and 600.8 MB in the end (delta: 373.8 MB). Free memory was 171.6 MB in the beginning and 397.8 MB in the end (delta: -226.3 MB). Peak memory consumption was 147.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:07,782 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 143.1 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 907.75 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 98.1 MB in the beginning and 166.1 MB in the end (delta: -68.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.54 ms. Allocated memory is still 199.8 MB. Free memory was 166.1 MB in the beginning and 162.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1250.12 ms. Allocated memory was 199.8 MB in the beginning and 227.0 MB in the end (delta: 27.3 MB). Free memory was 162.4 MB in the beginning and 171.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 88.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26750.19 ms. Allocated memory was 227.0 MB in the beginning and 600.8 MB in the end (delta: 373.8 MB). Free memory was 171.6 MB in the beginning and 397.8 MB in the end (delta: -226.3 MB). Peak memory consumption was 147.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 346]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L558] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L755] int waterLevel = 1; [L756] int methaneLevelCritical = 0; [L844] int cleanupTimeShifts = 4; [L917] int retValue_acc ; [L918] int tmp ; [L922] FCALL select_helpers() [L923] FCALL select_features() [L924] CALL, EXPR valid_product() [L380] int retValue_acc ; [L383] retValue_acc = 1 [L384] return (retValue_acc); [L924] RET, EXPR valid_product() [L924] tmp = valid_product() [L926] COND TRUE \read(tmp) [L928] FCALL setup() [L929] CALL runTest() [L911] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L773] COND TRUE waterLevel < 2 [L774] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(\read(pumpRunning)) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification3_spec__1() [L309] int tmp ; [L310] int tmp___0 ; [L311] int tmp___1 ; [L315] CALL, EXPR isMethaneLevelCritical() [L794] int retValue_acc ; [L797] retValue_acc = methaneLevelCritical [L798] return (retValue_acc); [L315] RET, EXPR isMethaneLevelCritical() [L315] tmp = isMethaneLevelCritical() [L317] COND FALSE !(\read(tmp)) [L321] CALL, EXPR getWaterLevel() [L826] int retValue_acc ; [L829] retValue_acc = waterLevel [L830] return (retValue_acc); [L321] RET, EXPR getWaterLevel() [L321] tmp___0 = getWaterLevel() [L323] COND TRUE tmp___0 == 2 [L325] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L325] RET, EXPR isPumpRunning() [L325] tmp___1 = isPumpRunning() [L327] COND FALSE !(\read(tmp___1)) [L331] CALL __automaton_fail() [L346] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 624 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 660 SDtfs, 1291 SDslu, 810 SDs, 0 SdLazy, 1790 SolverSat, 372 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=609occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 270 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 658 NumberOfCodeBlocks, 658 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 479 ConstructedInterpolants, 0 QuantifiedInterpolants, 202974 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...