/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:51:49,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:51:49,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:51:49,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:51:49,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:51:49,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:51:49,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:51:49,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:51:49,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:51:49,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:51:49,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:51:49,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:51:49,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:51:49,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:51:49,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:51:49,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:51:49,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:51:49,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:51:49,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:51:49,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:51:49,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:51:49,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:51:49,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:51:49,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:51:49,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:51:49,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:51:49,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:51:49,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:51:49,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:51:49,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:51:49,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:51:49,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:51:49,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:51:49,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:51:49,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:51:49,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:51:49,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:51:49,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:51:49,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:51:49,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:51:49,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:51:49,796 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 16:51:49,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:51:49,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:51:49,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:51:49,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:51:49,823 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:51:49,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:51:49,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:51:49,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:51:49,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:51:49,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:51:49,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:51:49,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:51:49,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:51:49,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:51:49,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:51:49,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:51:49,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:51:49,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:51:49,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:51:49,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:51:49,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:51:49,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:51:49,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:51:49,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:51:49,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:51:49,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:51:49,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:51:49,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:51:49,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:51:49,828 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;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;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;log-additional-information=true; [2020-09-24 16:51:50,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:51:50,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:51:50,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:51:50,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:51:50,300 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:51:50,302 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-09-24 16:51:50,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/305a7d6fc/aabd5e2de5a24aada87ce69b9909bcc1/FLAGc09f7cb15 [2020-09-24 16:51:50,967 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:51:50,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-09-24 16:51:50,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/305a7d6fc/aabd5e2de5a24aada87ce69b9909bcc1/FLAGc09f7cb15 [2020-09-24 16:51:51,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/305a7d6fc/aabd5e2de5a24aada87ce69b9909bcc1 [2020-09-24 16:51:51,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:51:51,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:51:51,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:51:51,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:51:51,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:51:51,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:51:51" (1/1) ... [2020-09-24 16:51:51,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:51, skipping insertion in model container [2020-09-24 16:51:51,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:51:51" (1/1) ... [2020-09-24 16:51:51,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:51:51,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:51:51,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:51:51,895 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:51:52,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:51:52,061 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:51:52,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52 WrapperNode [2020-09-24 16:51:52,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:51:52,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:51:52,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:51:52,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:51:52,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (1/1) ... [2020-09-24 16:51:52,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (1/1) ... [2020-09-24 16:51:52,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (1/1) ... [2020-09-24 16:51:52,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (1/1) ... [2020-09-24 16:51:52,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (1/1) ... [2020-09-24 16:51:52,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (1/1) ... [2020-09-24 16:51:52,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (1/1) ... [2020-09-24 16:51:52,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:51:52,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:51:52,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:51:52,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:51:52,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (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 16:51:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:51:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:51:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:51:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:51:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:51:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:51:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:51:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:51:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:51:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:51:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 16:51:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:51:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:51:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:51:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:51:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:51:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:51:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:51:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:51:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:51:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:51:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:51:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 16:51:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 16:51:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 16:51:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:51:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:51:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:51:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:51:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:51:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:51:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:51:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:51:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:51:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:51:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:51:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:51:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:51:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:51:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:51:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:51:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:51:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:51:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 16:51:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:51:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 16:51:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:51:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:51:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:51:52,252 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:51:52,252 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:51:52,252 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:51:52,252 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:51:52,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 16:51:52,253 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:51:52,253 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:51:52,253 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:51:52,253 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:51:52,253 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 16:51:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:51:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:51:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:51:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:51:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:51:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:51:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:51:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:51:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:51:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:51:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:51:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:51:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:51:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:51:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:51:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:51:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:51:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:51:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:51:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:51:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:51:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:51:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:51:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:51:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:51:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:51:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:51:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:51:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:51:53,547 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:51:53,548 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:51:53,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:51:53 BoogieIcfgContainer [2020-09-24 16:51:53,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:51:53,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:51:53,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:51:53,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:51:53,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:51:51" (1/3) ... [2020-09-24 16:51:53,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4231b6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:51:53, skipping insertion in model container [2020-09-24 16:51:53,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:51:52" (2/3) ... [2020-09-24 16:51:53,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4231b6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:51:53, skipping insertion in model container [2020-09-24 16:51:53,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:51:53" (3/3) ... [2020-09-24 16:51:53,566 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2020-09-24 16:51:53,579 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:51:53,592 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:51:53,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:51:53,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:51:53,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:51:53,655 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:51:53,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:51:53,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:51:53,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:51:53,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:51:53,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:51:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-09-24 16:51:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 16:51:53,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:51:53,713 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 16:51:53,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:51:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:51:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1368877385, now seen corresponding path program 1 times [2020-09-24 16:51:53,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:51:53,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274964297] [2020-09-24 16:51:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:51:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:51:54,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:51:59,813 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:51:59,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 16:51:59,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:51:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5729 [2020-09-24 16:51:59,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:51:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:51:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 16:51:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:51:59,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:52:00,242 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:52:00,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:52:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:00,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:52:00,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 16:52:00,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:00,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:52:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,494 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:00,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:00,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:00,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:00,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:52:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,504 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:00,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:00,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:00,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:00,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:00,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:52:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:00,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:00,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:00,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:52:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:00,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:52:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,526 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:00,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:00,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:00,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 16:52:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,536 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:52:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 16:52:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,548 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:00,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:00,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:00,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:00,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 16:52:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:00,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:00,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:00,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:00,597 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 16:52:00,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274964297] [2020-09-24 16:52:00,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:52:00,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:52:00,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770525384] [2020-09-24 16:52:00,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:52:00,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:52:00,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:52:00,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:52:00,661 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-09-24 16:52:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:52:02,080 INFO L93 Difference]: Finished difference Result 525 states and 623 transitions. [2020-09-24 16:52:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:52:02,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 16:52:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:52:02,104 INFO L225 Difference]: With dead ends: 525 [2020-09-24 16:52:02,104 INFO L226 Difference]: Without dead ends: 321 [2020-09-24 16:52:02,111 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 16:52:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-24 16:52:02,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 278. [2020-09-24 16:52:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-09-24 16:52:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 303 transitions. [2020-09-24 16:52:02,261 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 303 transitions. Word has length 153 [2020-09-24 16:52:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:52:02,265 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 303 transitions. [2020-09-24 16:52:02,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:52:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 303 transitions. [2020-09-24 16:52:02,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 16:52:02,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:02,271 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 16:52:02,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:52:02,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:02,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:02,272 INFO L82 PathProgramCache]: Analyzing trace with hash -519128140, now seen corresponding path program 1 times [2020-09-24 16:52:02,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:02,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618245086] [2020-09-24 16:52:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:02,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:02,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,140 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 16:52:09,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:52:09,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6814 [2020-09-24 16:52:09,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 16:52:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 16:52:09,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:09,492 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:52:09,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:52:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,625 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:52:09,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:09,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 16:52:09,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:09,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:09,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:09,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:09,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:52:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:09,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:09,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:09,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:52:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,671 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:09,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:09,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:09,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:52:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:09,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:09,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:09,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:52:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:09,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:09,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:09,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:09,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 16:52:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:09,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:09,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:09,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 16:52:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,700 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:09,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:09,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:09,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 16:52:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:09,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:09,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:09,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:09,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:52:09,734 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 16:52:09,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618245086] [2020-09-24 16:52:09,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:52:09,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:52:09,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323538437] [2020-09-24 16:52:09,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:52:09,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:52:09,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:52:09,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:52:09,740 INFO L87 Difference]: Start difference. First operand 278 states and 303 transitions. Second operand 4 states. [2020-09-24 16:52:10,453 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:52:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:52:11,548 INFO L93 Difference]: Finished difference Result 436 states and 490 transitions. [2020-09-24 16:52:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:52:11,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 16:52:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:52:11,555 INFO L225 Difference]: With dead ends: 436 [2020-09-24 16:52:11,555 INFO L226 Difference]: Without dead ends: 304 [2020-09-24 16:52:11,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:52:11,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-24 16:52:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 268. [2020-09-24 16:52:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-24 16:52:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 290 transitions. [2020-09-24 16:52:11,605 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 290 transitions. Word has length 154 [2020-09-24 16:52:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:52:11,606 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 290 transitions. [2020-09-24 16:52:11,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:52:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 290 transitions. [2020-09-24 16:52:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 16:52:11,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:11,609 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] [2020-09-24 16:52:11,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:52:11,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2138906807, now seen corresponding path program 1 times [2020-09-24 16:52:11,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:11,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814319942] [2020-09-24 16:52:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:11,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:15,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:15,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 16:52:15,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 16:52:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3636 [2020-09-24 16:52:15,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:52:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 16:52:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 16:52:15,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:15,772 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:52:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:52:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:15,962 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:15,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:52:15,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:15,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 16:52:15,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:15,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:15,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:15,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 16:52:15,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:52:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:16,020 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:16,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:16,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:52:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:16,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:16,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:16,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:16,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:52:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:16,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:16,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:16,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:16,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:52:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:52:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:52:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:16,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:16,047 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:16,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:16,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:16,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:16,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 16:52:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:16,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:16,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:16,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:16,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 16:52:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:16,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:16,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:16,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:16,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:16,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 16:52:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:16,068 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:16,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:16,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:16,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:16,100 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 16:52:16,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814319942] [2020-09-24 16:52:16,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:52:16,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:52:16,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521129954] [2020-09-24 16:52:16,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:52:16,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:52:16,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:52:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:52:16,105 INFO L87 Difference]: Start difference. First operand 268 states and 290 transitions. Second operand 4 states. [2020-09-24 16:52:16,610 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:52:18,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:52:18,442 INFO L93 Difference]: Finished difference Result 632 states and 721 transitions. [2020-09-24 16:52:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:52:18,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-24 16:52:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:52:18,453 INFO L225 Difference]: With dead ends: 632 [2020-09-24 16:52:18,453 INFO L226 Difference]: Without dead ends: 474 [2020-09-24 16:52:18,454 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 16:52:18,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-09-24 16:52:18,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 420. [2020-09-24 16:52:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-09-24 16:52:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 465 transitions. [2020-09-24 16:52:18,524 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 465 transitions. Word has length 163 [2020-09-24 16:52:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:52:18,524 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 465 transitions. [2020-09-24 16:52:18,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:52:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 465 transitions. [2020-09-24 16:52:18,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 16:52:18,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:18,528 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 16:52:18,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:52:18,529 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:18,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:18,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2098385337, now seen corresponding path program 1 times [2020-09-24 16:52:18,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:18,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705789732] [2020-09-24 16:52:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:20,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:20,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 16:52:20,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1626 [2020-09-24 16:52:20,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:52:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 16:52:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 16:52:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:20,639 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:52:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:52:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:20,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:20,943 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:20,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:52:20,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 16:52:20,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:20,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 16:52:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:52:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:21,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:21,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:21,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:21,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:21,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:52:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:21,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:21,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:21,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:52:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,047 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:21,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:21,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:52:21,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:52:21,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:52:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,058 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:21,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:21,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:21,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 16:52:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:21,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,091 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:21,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:52:21,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:21,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:52:21,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:21,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:52:21,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 16:52:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:21,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:21,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:21,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:52:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:21,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 16:52:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:21,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:21,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:21,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 16:52:21,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:52:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:52:21,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 16:52:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:52:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:21,206 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 16:52:21,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705789732] [2020-09-24 16:52:21,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:52:21,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 16:52:21,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654441483] [2020-09-24 16:52:21,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:52:21,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:52:21,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:52:21,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:52:21,211 INFO L87 Difference]: Start difference. First operand 420 states and 465 transitions. Second operand 10 states. [2020-09-24 16:52:21,722 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:52:23,934 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:52:24,578 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-24 16:52:24,978 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:52:25,352 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:52:25,700 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 16:52:26,053 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 16:52:26,380 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:52:26,856 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:52:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:52:27,885 INFO L93 Difference]: Finished difference Result 1135 states and 1392 transitions. [2020-09-24 16:52:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:52:27,886 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-09-24 16:52:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:52:27,894 INFO L225 Difference]: With dead ends: 1135 [2020-09-24 16:52:27,894 INFO L226 Difference]: Without dead ends: 825 [2020-09-24 16:52:27,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:52:27,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-09-24 16:52:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 701. [2020-09-24 16:52:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-09-24 16:52:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 800 transitions. [2020-09-24 16:52:28,017 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 800 transitions. Word has length 172 [2020-09-24 16:52:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:52:28,017 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 800 transitions. [2020-09-24 16:52:28,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:52:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 800 transitions. [2020-09-24 16:52:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 16:52:28,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:28,022 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 16:52:28,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:52:28,023 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:28,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1702574382, now seen corresponding path program 1 times [2020-09-24 16:52:28,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:28,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4174387] [2020-09-24 16:52:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:52:28,089 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:52:28,089 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:52:28,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:52:28,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:52:28 BoogieIcfgContainer [2020-09-24 16:52:28,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:52:28,125 INFO L168 Benchmark]: Toolchain (without parser) took 36898.20 ms. Allocated memory was 138.4 MB in the beginning and 649.6 MB in the end (delta: 511.2 MB). Free memory was 99.3 MB in the beginning and 161.6 MB in the end (delta: -62.3 MB). Peak memory consumption was 448.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:52:28,126 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:52:28,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 828.67 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.7 MB in the beginning and 169.9 MB in the end (delta: -71.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:52:28,127 INFO L168 Benchmark]: Boogie Preprocessor took 96.83 ms. Allocated memory is still 202.4 MB. Free memory was 169.9 MB in the beginning and 165.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:52:28,128 INFO L168 Benchmark]: RCFGBuilder took 1395.89 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 165.8 MB in the beginning and 172.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:52:28,129 INFO L168 Benchmark]: TraceAbstraction took 34565.65 ms. Allocated memory was 233.3 MB in the beginning and 649.6 MB in the end (delta: 416.3 MB). Free memory was 172.1 MB in the beginning and 161.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 426.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:52:28,133 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 828.67 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.7 MB in the beginning and 169.9 MB in the end (delta: -71.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.83 ms. Allocated memory is still 202.4 MB. Free memory was 169.9 MB in the beginning and 165.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1395.89 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 165.8 MB in the beginning and 172.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34565.65 ms. Allocated memory was 233.3 MB in the beginning and 649.6 MB in the end (delta: 416.3 MB). Free memory was 172.1 MB in the beginning and 161.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 426.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 977]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L225] int pumpRunning = 0; [L226] int systemActive = 1; [L473] int cleanupTimeShifts = 4; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L549] int retValue_acc ; [L550] int tmp ; [L554] FCALL select_helpers() [L555] FCALL select_features() [L556] CALL, EXPR valid_product() [L598] int retValue_acc ; [L601] retValue_acc = 1 [L602] return (retValue_acc); [L556] RET, EXPR valid_product() [L556] tmp = valid_product() [L558] COND TRUE \read(tmp) [L560] FCALL setup() [L561] CALL runTest() [L540] CALL test() [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 [L164] COND TRUE 1 [L166] COND TRUE splverifierCounter < 4 [L172] tmp = __VERIFIER_nondet_int() [L174] COND TRUE \read(tmp) [L176] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L176] RET waterRise() [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___2)) [L198] tmp___1 = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp___1) [L202] CALL stopSystem() [L426] COND FALSE !(\read(pumpRunning)) [L433] systemActive = 0 [L202] RET stopSystem() [L209] CALL timeShift() [L233] COND FALSE !(\read(pumpRunning)) [L240] COND FALSE !(\read(systemActive)) [L248] CALL __utac_acc__Specification3_spec__1() [L440] int tmp ; [L441] int tmp___0 ; [L442] int tmp___1 ; [L446] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L446] RET, EXPR isMethaneLevelCritical() [L446] tmp = isMethaneLevelCritical() [L448] COND FALSE !(\read(tmp)) [L452] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L452] RET, EXPR getWaterLevel() [L452] tmp___0 = getWaterLevel() [L454] COND TRUE tmp___0 == 2 [L456] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L456] RET, EXPR isPumpRunning() [L456] tmp___1 = isPumpRunning() [L458] COND FALSE !(\read(tmp___1)) [L462] CALL __automaton_fail() [L977] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 649 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1072 SDtfs, 1390 SDslu, 818 SDs, 0 SdLazy, 2360 SolverSat, 463 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=701occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 257 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 20.8s InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 266695 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...