/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:12:22,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:12:22,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:12:22,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:12:22,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:12:22,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:12:22,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:12:22,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:12:22,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:12:22,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:12:22,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:12:22,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:12:22,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:12:22,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:12:22,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:12:22,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:12:22,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:12:22,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:12:22,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:12:22,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:12:22,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:12:22,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:12:22,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:12:22,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:12:22,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:12:22,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:12:22,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:12:22,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:12:22,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:12:22,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:12:22,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:12:22,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:12:22,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:12:22,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:12:22,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:12:22,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:12:22,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:12:22,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:12:22,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:12:22,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:12:22,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:12:22,869 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 [2020-08-21 21:12:22,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:12:22,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:12:22,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:12:22,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:12:22,892 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:12:22,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:12:22,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:12:22,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:12:22,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:12:22,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:12:22,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:12:22,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:12:22,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:12:22,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:12:22,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:12:22,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:12:22,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:12:22,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:12:22,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:12:22,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:12:22,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:12:22,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:12:22,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:12:22,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:12:22,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:12:22,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:12:22,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:12:22,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:12:22,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:12:22,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:12:23,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:12:23,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:12:23,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:12:23,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:12:23,221 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:12:23,221 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-08-21 21:12:23,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c5286c0/ea9b66e38b88413ebaeb509368177ec6/FLAGbe343bdd1 [2020-08-21 21:12:23,850 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:12:23,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-08-21 21:12:23,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c5286c0/ea9b66e38b88413ebaeb509368177ec6/FLAGbe343bdd1 [2020-08-21 21:12:24,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82c5286c0/ea9b66e38b88413ebaeb509368177ec6 [2020-08-21 21:12:24,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:12:24,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:12:24,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:12:24,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:12:24,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:12:24,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26da8024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24, skipping insertion in model container [2020-08-21 21:12:24,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:12:24,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:12:24,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:12:24,677 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:12:24,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:12:24,796 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:12:24,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24 WrapperNode [2020-08-21 21:12:24,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:12:24,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:12:24,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:12:24,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:12:24,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (1/1) ... [2020-08-21 21:12:24,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:12:24,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:12:24,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:12:24,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:12:24,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (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 [2020-08-21 21:12:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:12:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:12:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:12:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:12:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:12:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:12:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:12:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:12:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:12:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:12:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:12:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:12:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:12:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:12:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:12:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:12:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:12:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:12:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:12:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:12:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:12:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:12:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:12:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:12:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 21:12:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:12:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:12:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:12:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:12:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:12:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:12:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:12:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:12:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:12:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:12:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:12:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:12:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:12:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:12:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:12:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:12:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:12:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:12:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:12:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:12:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:12:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:12:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:12:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:12:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:12:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 21:12:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:12:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:12:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:12:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:12:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:12:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:12:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:12:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:12:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:12:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:12:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:12:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:12:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:12:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:12:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:12:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:12:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:12:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:12:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:12:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:12:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:12:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:12:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:12:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:12:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:12:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:12:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:12:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:12:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:12:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:12:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:12:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:12:26,010 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:12:26,010 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:12:26,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:12:26 BoogieIcfgContainer [2020-08-21 21:12:26,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:12:26,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:12:26,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:12:26,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:12:26,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:12:24" (1/3) ... [2020-08-21 21:12:26,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf2a22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:12:26, skipping insertion in model container [2020-08-21 21:12:26,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:24" (2/3) ... [2020-08-21 21:12:26,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf2a22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:12:26, skipping insertion in model container [2020-08-21 21:12:26,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:12:26" (3/3) ... [2020-08-21 21:12:26,024 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-08-21 21:12:26,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:12:26,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:12:26,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:12:26,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:12:26,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:12:26,084 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:12:26,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:12:26,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:12:26,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:12:26,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:12:26,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:12:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-21 21:12:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:12:26,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:26,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:12:26,121 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash -899623382, now seen corresponding path program 1 times [2020-08-21 21:12:26,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:26,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468655357] [2020-08-21 21:12:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:26,867 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:26,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:26,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:12:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:26,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:12:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:26,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:12:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:27,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468655357] [2020-08-21 21:12:27,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:27,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:12:27,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532951683] [2020-08-21 21:12:27,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:12:27,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:12:27,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:12:27,035 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-21 21:12:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:28,212 INFO L93 Difference]: Finished difference Result 313 states and 411 transitions. [2020-08-21 21:12:28,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:12:28,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 21:12:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:28,236 INFO L225 Difference]: With dead ends: 313 [2020-08-21 21:12:28,236 INFO L226 Difference]: Without dead ends: 169 [2020-08-21 21:12:28,244 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 [2020-08-21 21:12:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-21 21:12:28,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-08-21 21:12:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-21 21:12:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-21 21:12:28,399 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 52 [2020-08-21 21:12:28,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:28,400 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-21 21:12:28,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:12:28,400 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-21 21:12:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 21:12:28,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:28,404 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] [2020-08-21 21:12:28,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:12:28,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:28,405 INFO L82 PathProgramCache]: Analyzing trace with hash 345033864, now seen corresponding path program 1 times [2020-08-21 21:12:28,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:28,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739524144] [2020-08-21 21:12:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,743 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:12:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:12:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:28,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739524144] [2020-08-21 21:12:28,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:28,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:12:28,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378082475] [2020-08-21 21:12:28,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:12:28,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:28,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:12:28,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:12:28,796 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 4 states. [2020-08-21 21:12:29,190 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:12:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:30,022 INFO L93 Difference]: Finished difference Result 240 states and 294 transitions. [2020-08-21 21:12:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:12:30,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 21:12:30,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:30,026 INFO L225 Difference]: With dead ends: 240 [2020-08-21 21:12:30,026 INFO L226 Difference]: Without dead ends: 153 [2020-08-21 21:12:30,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:12:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-21 21:12:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 126. [2020-08-21 21:12:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 21:12:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-21 21:12:30,070 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 53 [2020-08-21 21:12:30,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:30,070 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-21 21:12:30,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:12:30,070 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-21 21:12:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 21:12:30,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:30,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:12:30,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:12:30,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:30,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1653234581, now seen corresponding path program 1 times [2020-08-21 21:12:30,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:30,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96745405] [2020-08-21 21:12:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,412 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:12:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:12:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:12:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:30,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96745405] [2020-08-21 21:12:30,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:30,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:12:30,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175806154] [2020-08-21 21:12:30,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:12:30,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:30,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:12:30,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:12:30,504 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 8 states. [2020-08-21 21:12:30,843 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:31,139 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:31,426 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:31,648 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:32,353 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:12:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:34,172 INFO L93 Difference]: Finished difference Result 436 states and 543 transitions. [2020-08-21 21:12:34,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:12:34,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 21:12:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:34,179 INFO L225 Difference]: With dead ends: 436 [2020-08-21 21:12:34,179 INFO L226 Difference]: Without dead ends: 334 [2020-08-21 21:12:34,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:12:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-08-21 21:12:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 276. [2020-08-21 21:12:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-08-21 21:12:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 335 transitions. [2020-08-21 21:12:34,249 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 335 transitions. Word has length 57 [2020-08-21 21:12:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:34,250 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 335 transitions. [2020-08-21 21:12:34,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:12:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 335 transitions. [2020-08-21 21:12:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 21:12:34,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:34,253 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] [2020-08-21 21:12:34,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:12:34,254 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:34,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:34,254 INFO L82 PathProgramCache]: Analyzing trace with hash -55334840, now seen corresponding path program 1 times [2020-08-21 21:12:34,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:34,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107241785] [2020-08-21 21:12:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,625 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:12:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:12:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 21:12:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:34,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107241785] [2020-08-21 21:12:34,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:34,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:12:34,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737332204] [2020-08-21 21:12:34,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:12:34,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:34,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:12:34,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:12:34,756 INFO L87 Difference]: Start difference. First operand 276 states and 335 transitions. Second operand 8 states. [2020-08-21 21:12:35,081 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:36,419 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:36,740 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:36,993 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:37,230 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:37,950 INFO L93 Difference]: Finished difference Result 848 states and 1119 transitions. [2020-08-21 21:12:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 21:12:37,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 21:12:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:37,957 INFO L225 Difference]: With dead ends: 848 [2020-08-21 21:12:37,957 INFO L226 Difference]: Without dead ends: 596 [2020-08-21 21:12:37,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:12:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-08-21 21:12:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 529. [2020-08-21 21:12:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-08-21 21:12:38,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 655 transitions. [2020-08-21 21:12:38,079 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 655 transitions. Word has length 63 [2020-08-21 21:12:38,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:38,080 INFO L479 AbstractCegarLoop]: Abstraction has 529 states and 655 transitions. [2020-08-21 21:12:38,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:12:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 655 transitions. [2020-08-21 21:12:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 21:12:38,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:38,085 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] [2020-08-21 21:12:38,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:12:38,086 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1296263794, now seen corresponding path program 1 times [2020-08-21 21:12:38,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:38,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105302339] [2020-08-21 21:12:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,351 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:38,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:12:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:12:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:12:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 21:12:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:38,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105302339] [2020-08-21 21:12:38,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:38,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:12:38,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586592028] [2020-08-21 21:12:38,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:12:38,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:38,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:12:38,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:12:38,418 INFO L87 Difference]: Start difference. First operand 529 states and 655 transitions. Second operand 6 states. [2020-08-21 21:12:38,713 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:40,487 INFO L93 Difference]: Finished difference Result 1270 states and 1664 transitions. [2020-08-21 21:12:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 21:12:40,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 21:12:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:40,493 INFO L225 Difference]: With dead ends: 1270 [2020-08-21 21:12:40,493 INFO L226 Difference]: Without dead ends: 765 [2020-08-21 21:12:40,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:12:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-08-21 21:12:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 695. [2020-08-21 21:12:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-08-21 21:12:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-08-21 21:12:40,618 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 67 [2020-08-21 21:12:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:40,618 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-08-21 21:12:40,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:12:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-08-21 21:12:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 21:12:40,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:40,621 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] [2020-08-21 21:12:40,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:12:40,621 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1597316302, now seen corresponding path program 1 times [2020-08-21 21:12:40,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:40,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850119062] [2020-08-21 21:12:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:12:40,683 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:12:40,683 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:12:40,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:12:40,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:12:40 BoogieIcfgContainer [2020-08-21 21:12:40,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:12:40,714 INFO L168 Benchmark]: Toolchain (without parser) took 16553.59 ms. Allocated memory was 139.5 MB in the beginning and 531.6 MB in the end (delta: 392.2 MB). Free memory was 101.4 MB in the beginning and 375.6 MB in the end (delta: -274.3 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:40,715 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:12:40,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.08 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 173.1 MB in the end (delta: -71.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:40,716 INFO L168 Benchmark]: Boogie Preprocessor took 100.87 ms. Allocated memory is still 202.9 MB. Free memory was 173.1 MB in the beginning and 168.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:40,717 INFO L168 Benchmark]: RCFGBuilder took 1116.65 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.7 MB in the beginning and 199.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:40,718 INFO L168 Benchmark]: TraceAbstraction took 14695.29 ms. Allocated memory was 235.9 MB in the beginning and 531.6 MB in the end (delta: 295.7 MB). Free memory was 199.3 MB in the beginning and 375.6 MB in the end (delta: -176.3 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:40,722 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 636.08 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 173.1 MB in the end (delta: -71.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.87 ms. Allocated memory is still 202.9 MB. Free memory was 173.1 MB in the beginning and 168.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1116.65 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.7 MB in the beginning and 199.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14695.29 ms. Allocated memory was 235.9 MB in the beginning and 531.6 MB in the end (delta: 295.7 MB). Free memory was 199.3 MB in the beginning and 375.6 MB in the end (delta: -176.3 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 451]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L185] int pumpRunning = 0; [L186] int systemActive = 1; [L625] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L381] int splverifierCounter ; [L382] int tmp ; [L383] int tmp___0 ; [L384] int tmp___1 ; [L385] int tmp___2 ; [L388] splverifierCounter = 0 [L390] COND TRUE 1 [L392] COND TRUE splverifierCounter < 4 [L398] tmp = __VERIFIER_nondet_int() [L400] COND TRUE \read(tmp) [L402] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L402] RET waterRise() [L408] tmp___0 = __VERIFIER_nondet_int() [L410] COND FALSE !(\read(tmp___0)) [L418] tmp___2 = __VERIFIER_nondet_int() [L420] COND FALSE !(\read(tmp___2)) [L424] tmp___1 = __VERIFIER_nondet_int() [L426] COND TRUE \read(tmp___1) [L428] CALL stopSystem() [L367] COND FALSE !(\read(pumpRunning)) [L374] systemActive = 0 [L428] RET stopSystem() [L435] CALL timeShift() [L193] COND FALSE !(\read(pumpRunning)) [L200] COND FALSE !(\read(systemActive)) [L208] CALL __utac_acc__Specification3_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L921] int tmp___1 ; [L925] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L925] RET, EXPR isMethaneLevelCritical() [L925] tmp = isMethaneLevelCritical() [L927] COND FALSE !(\read(tmp)) [L931] CALL, EXPR getWaterLevel() [L156] int retValue_acc ; [L159] retValue_acc = waterLevel [L160] return (retValue_acc); [L931] RET, EXPR getWaterLevel() [L931] tmp___0 = getWaterLevel() [L933] COND TRUE tmp___0 == 2 [L935] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L935] RET, EXPR isPumpRunning() [L935] tmp___1 = isPumpRunning() [L937] COND FALSE !(\read(tmp___1)) [L941] CALL __automaton_fail() [L451] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 622 SDtfs, 1071 SDslu, 418 SDs, 0 SdLazy, 2332 SolverSat, 681 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=695occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 256 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...