/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:01:50,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:01:50,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:01:50,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:01:50,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:01:50,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:01:50,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:01:50,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:01:50,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:01:50,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:01:50,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:01:50,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:01:50,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:01:50,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:01:50,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:01:50,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:01:50,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:01:50,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:01:50,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:01:50,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:01:50,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:01:50,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:01:50,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:01:50,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:01:50,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:01:50,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:01:50,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:01:50,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:01:50,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:01:50,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:01:50,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:01:50,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:01:50,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:01:50,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:01:50,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:01:50,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:01:50,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:01:50,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:01:50,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:01:50,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:01:50,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:01:50,795 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 [2020-08-22 02:01:50,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:01:50,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:01:50,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:01:50,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:01:50,836 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:01:50,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:01:50,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:01:50,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:01:50,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:01:50,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:01:50,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:01:50,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:01:50,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:01:50,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:01:50,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:01:50,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:01:50,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:01:50,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:01:50,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:01:50,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:01:50,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:01:50,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:01:50,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:01:50,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:01:50,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:01:50,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:01:50,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:01:50,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:01:50,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:01:50,842 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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:01:51,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:01:51,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:01:51,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:01:51,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:01:51,145 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:01:51,146 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-22 02:01:51,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce3780987/e76fde6a0bd64018b4f33219bc07397f/FLAG64aeb8727 [2020-08-22 02:01:51,737 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:01:51,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-22 02:01:51,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce3780987/e76fde6a0bd64018b4f33219bc07397f/FLAG64aeb8727 [2020-08-22 02:01:52,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce3780987/e76fde6a0bd64018b4f33219bc07397f [2020-08-22 02:01:52,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:01:52,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:01:52,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:01:52,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:01:52,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:01:52,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36dab12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52, skipping insertion in model container [2020-08-22 02:01:52,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:01:52,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:01:52,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:01:52,456 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:01:52,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:01:52,690 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:01:52,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52 WrapperNode [2020-08-22 02:01:52,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:01:52,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:01:52,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:01:52,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:01:52,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (1/1) ... [2020-08-22 02:01:52,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:01:52,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:01:52,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:01:52,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:01:52,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (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 [2020-08-22 02:01:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:01:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:01:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:01:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:01:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:01:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:01:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:01:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:01:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:01:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:01:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:01:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:01:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:01:52,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:01:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:01:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:01:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:01:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:01:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:01:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:01:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:01:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:01:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:01:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:01:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:01:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:01:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:01:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:01:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:01:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:01:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:01:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:01:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:01:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:01:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:01:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:01:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:01:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:01:52,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 02:01:52,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 02:01:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:01:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:01:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:01:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:01:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:01:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:01:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:01:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:01:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:01:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:01:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:01:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:01:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:01:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:01:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:01:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:01:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:01:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:01:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:01:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:01:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:01:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:01:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:01:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:01:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:01:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:01:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:01:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 02:01:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:01:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:01:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:01:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:01:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:01:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:01:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:01:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:01:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:01:53,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:01:53,978 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:01:53,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:01:53 BoogieIcfgContainer [2020-08-22 02:01:53,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:01:53,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:01:53,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:01:53,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:01:53,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:01:52" (1/3) ... [2020-08-22 02:01:53,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54969c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:01:53, skipping insertion in model container [2020-08-22 02:01:53,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:52" (2/3) ... [2020-08-22 02:01:53,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54969c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:01:53, skipping insertion in model container [2020-08-22 02:01:53,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:01:53" (3/3) ... [2020-08-22 02:01:53,992 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-08-22 02:01:54,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:01:54,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:01:54,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:01:54,050 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:01:54,050 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:01:54,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:01:54,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:01:54,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:01:54,051 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:01:54,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:01:54,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:01:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 02:01:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:01:54,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:01:54,086 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] [2020-08-22 02:01:54,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:01:54,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:01:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash 171708589, now seen corresponding path program 1 times [2020-08-22 02:01:54,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:01:54,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074549681] [2020-08-22 02:01:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:01:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,761 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:01:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:01:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:01:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:01:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:01:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:01:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:01:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:01:54,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074549681] [2020-08-22 02:01:54,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:01:54,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:01:54,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531553412] [2020-08-22 02:01:54,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:01:54,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:01:54,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:01:54,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:01:54,957 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 02:01:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:01:56,013 INFO L93 Difference]: Finished difference Result 279 states and 365 transitions. [2020-08-22 02:01:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:01:56,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 02:01:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:01:56,030 INFO L225 Difference]: With dead ends: 279 [2020-08-22 02:01:56,030 INFO L226 Difference]: Without dead ends: 157 [2020-08-22 02:01:56,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:01:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-22 02:01:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 123. [2020-08-22 02:01:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 02:01:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-22 02:01:56,125 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 51 [2020-08-22 02:01:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:01:56,125 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-22 02:01:56,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:01:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-22 02:01:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:01:56,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:01:56,129 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] [2020-08-22 02:01:56,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:01:56,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:01:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:01:56,130 INFO L82 PathProgramCache]: Analyzing trace with hash -70243324, now seen corresponding path program 1 times [2020-08-22 02:01:56,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:01:56,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238799073] [2020-08-22 02:01:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:01:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,450 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:01:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:01:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:01:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:01:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:01:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:01:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:01:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:01:56,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238799073] [2020-08-22 02:01:56,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:01:56,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:01:56,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845507334] [2020-08-22 02:01:56,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:01:56,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:01:56,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:01:56,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:01:56,504 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 5 states. [2020-08-22 02:01:56,951 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:01:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:01:57,744 INFO L93 Difference]: Finished difference Result 211 states and 262 transitions. [2020-08-22 02:01:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:01:57,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 02:01:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:01:57,747 INFO L225 Difference]: With dead ends: 211 [2020-08-22 02:01:57,747 INFO L226 Difference]: Without dead ends: 147 [2020-08-22 02:01:57,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:01:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-22 02:01:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 114. [2020-08-22 02:01:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 02:01:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-22 02:01:57,784 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 52 [2020-08-22 02:01:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:01:57,788 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-22 02:01:57,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:01:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-22 02:01:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:01:57,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:01:57,791 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] [2020-08-22 02:01:57,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:01:57,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:01:57,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:01:57,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1406294977, now seen corresponding path program 1 times [2020-08-22 02:01:57,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:01:57,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562244543] [2020-08-22 02:01:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:01:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,146 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:01:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:01:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:01:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:01:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:01:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:01:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:01:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:01:58,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562244543] [2020-08-22 02:01:58,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:01:58,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:01:58,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251447416] [2020-08-22 02:01:58,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:01:58,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:01:58,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:01:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:01:58,262 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 9 states. [2020-08-22 02:01:58,669 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:59,004 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:01:59,278 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:01:59,501 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:00,271 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:01,933 INFO L93 Difference]: Finished difference Result 390 states and 490 transitions. [2020-08-22 02:02:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:02:01,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 02:02:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:01,938 INFO L225 Difference]: With dead ends: 390 [2020-08-22 02:02:01,938 INFO L226 Difference]: Without dead ends: 304 [2020-08-22 02:02:01,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:02:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-08-22 02:02:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 227. [2020-08-22 02:02:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-08-22 02:02:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 272 transitions. [2020-08-22 02:02:02,055 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 272 transitions. Word has length 57 [2020-08-22 02:02:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:02,057 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 272 transitions. [2020-08-22 02:02:02,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:02:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 272 transitions. [2020-08-22 02:02:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 02:02:02,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:02,065 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] [2020-08-22 02:02:02,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:02:02,066 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1471569046, now seen corresponding path program 1 times [2020-08-22 02:02:02,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:02,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020921486] [2020-08-22 02:02:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,427 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:02:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:02:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:02:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:02,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020921486] [2020-08-22 02:02:02,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:02,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:02:02,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074685481] [2020-08-22 02:02:02,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:02:02,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:02,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:02:02,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:02:02,556 INFO L87 Difference]: Start difference. First operand 227 states and 272 transitions. Second operand 9 states. [2020-08-22 02:02:02,913 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:04,150 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:04,454 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:04,706 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:04,924 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:05,958 INFO L93 Difference]: Finished difference Result 730 states and 972 transitions. [2020-08-22 02:02:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 02:02:05,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 02:02:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:05,965 INFO L225 Difference]: With dead ends: 730 [2020-08-22 02:02:05,965 INFO L226 Difference]: Without dead ends: 531 [2020-08-22 02:02:05,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 02:02:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-22 02:02:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 402. [2020-08-22 02:02:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-08-22 02:02:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 484 transitions. [2020-08-22 02:02:06,067 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 484 transitions. Word has length 62 [2020-08-22 02:02:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:06,068 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 484 transitions. [2020-08-22 02:02:06,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:02:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 484 transitions. [2020-08-22 02:02:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 02:02:06,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:06,070 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] [2020-08-22 02:02:06,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:02:06,071 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:06,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:06,071 INFO L82 PathProgramCache]: Analyzing trace with hash -675634618, now seen corresponding path program 1 times [2020-08-22 02:02:06,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:06,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421535497] [2020-08-22 02:02:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,333 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:02:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:02:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:02:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 02:02:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:06,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421535497] [2020-08-22 02:02:06,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:06,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:02:06,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521724101] [2020-08-22 02:02:06,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:02:06,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:06,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:02:06,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:02:06,453 INFO L87 Difference]: Start difference. First operand 402 states and 484 transitions. Second operand 10 states. [2020-08-22 02:02:06,999 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:08,019 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:08,293 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:08,573 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:09,077 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:10,193 INFO L93 Difference]: Finished difference Result 1162 states and 1576 transitions. [2020-08-22 02:02:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 02:02:10,196 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 02:02:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:10,203 INFO L225 Difference]: With dead ends: 1162 [2020-08-22 02:02:10,203 INFO L226 Difference]: Without dead ends: 788 [2020-08-22 02:02:10,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 02:02:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-08-22 02:02:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 593. [2020-08-22 02:02:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-08-22 02:02:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 715 transitions. [2020-08-22 02:02:10,323 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 715 transitions. Word has length 66 [2020-08-22 02:02:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:10,324 INFO L479 AbstractCegarLoop]: Abstraction has 593 states and 715 transitions. [2020-08-22 02:02:10,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:02:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 715 transitions. [2020-08-22 02:02:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:02:10,326 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:10,327 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] [2020-08-22 02:02:10,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:02:10,327 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:10,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1616247053, now seen corresponding path program 1 times [2020-08-22 02:02:10,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:10,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492151629] [2020-08-22 02:02:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,600 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:02:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:02:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 02:02:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 02:02:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:10,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492151629] [2020-08-22 02:02:10,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:10,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:02:10,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796747448] [2020-08-22 02:02:10,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:02:10,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:10,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:02:10,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:02:10,771 INFO L87 Difference]: Start difference. First operand 593 states and 715 transitions. Second operand 10 states. [2020-08-22 02:02:11,169 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:12,230 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:12,500 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 02:02:12,780 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:13,070 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:14,685 INFO L93 Difference]: Finished difference Result 2139 states and 3058 transitions. [2020-08-22 02:02:14,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 02:02:14,691 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-22 02:02:14,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:14,702 INFO L225 Difference]: With dead ends: 2139 [2020-08-22 02:02:14,703 INFO L226 Difference]: Without dead ends: 1574 [2020-08-22 02:02:14,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 02:02:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2020-08-22 02:02:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1135. [2020-08-22 02:02:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-08-22 02:02:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1372 transitions. [2020-08-22 02:02:14,948 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1372 transitions. Word has length 84 [2020-08-22 02:02:14,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:14,948 INFO L479 AbstractCegarLoop]: Abstraction has 1135 states and 1372 transitions. [2020-08-22 02:02:14,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:02:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1372 transitions. [2020-08-22 02:02:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:02:14,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:14,952 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] [2020-08-22 02:02:14,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:02:14,953 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:14,953 INFO L82 PathProgramCache]: Analyzing trace with hash 567429874, now seen corresponding path program 1 times [2020-08-22 02:02:14,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:14,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221982592] [2020-08-22 02:02:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,186 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:15,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:02:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:02:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 02:02:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 02:02:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:15,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221982592] [2020-08-22 02:02:15,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:15,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:02:15,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768347996] [2020-08-22 02:02:15,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:02:15,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:15,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:02:15,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:02:15,405 INFO L87 Difference]: Start difference. First operand 1135 states and 1372 transitions. Second operand 10 states. [2020-08-22 02:02:16,650 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:16,916 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:02:17,188 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:17,435 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:18,860 INFO L93 Difference]: Finished difference Result 2694 states and 3601 transitions. [2020-08-22 02:02:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:02:18,864 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-22 02:02:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:18,877 INFO L225 Difference]: With dead ends: 2694 [2020-08-22 02:02:18,877 INFO L226 Difference]: Without dead ends: 1587 [2020-08-22 02:02:18,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:02:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-08-22 02:02:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1175. [2020-08-22 02:02:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-08-22 02:02:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1412 transitions. [2020-08-22 02:02:19,128 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1412 transitions. Word has length 84 [2020-08-22 02:02:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:19,128 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1412 transitions. [2020-08-22 02:02:19,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:02:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1412 transitions. [2020-08-22 02:02:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:02:19,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:19,132 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] [2020-08-22 02:02:19,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:02:19,132 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:19,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1953633268, now seen corresponding path program 1 times [2020-08-22 02:02:19,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:19,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435705559] [2020-08-22 02:02:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,494 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:19,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:02:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:02:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 02:02:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 02:02:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:19,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435705559] [2020-08-22 02:02:19,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:19,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:02:19,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799989152] [2020-08-22 02:02:19,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:02:19,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:19,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:02:19,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:02:19,690 INFO L87 Difference]: Start difference. First operand 1175 states and 1412 transitions. Second operand 12 states. [2020-08-22 02:02:20,363 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:20,606 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:20,839 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:21,620 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:21,872 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:22,106 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:23,436 INFO L93 Difference]: Finished difference Result 2386 states and 3145 transitions. [2020-08-22 02:02:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:02:23,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-22 02:02:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:23,446 INFO L225 Difference]: With dead ends: 2386 [2020-08-22 02:02:23,446 INFO L226 Difference]: Without dead ends: 1239 [2020-08-22 02:02:23,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 02:02:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-08-22 02:02:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 951. [2020-08-22 02:02:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-08-22 02:02:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1112 transitions. [2020-08-22 02:02:23,664 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1112 transitions. Word has length 84 [2020-08-22 02:02:23,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:23,664 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1112 transitions. [2020-08-22 02:02:23,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:02:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1112 transitions. [2020-08-22 02:02:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:02:23,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:23,667 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] [2020-08-22 02:02:23,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:02:23,668 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:23,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1427109873, now seen corresponding path program 1 times [2020-08-22 02:02:23,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:23,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720679808] [2020-08-22 02:02:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:23,999 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:24,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:02:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:02:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:02:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 02:02:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 02:02:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:02:24,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720679808] [2020-08-22 02:02:24,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:24,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:02:24,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839788556] [2020-08-22 02:02:24,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:02:24,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:24,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:02:24,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:02:24,129 INFO L87 Difference]: Start difference. First operand 951 states and 1112 transitions. Second operand 8 states. [2020-08-22 02:02:24,555 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:26,643 INFO L93 Difference]: Finished difference Result 1906 states and 2527 transitions. [2020-08-22 02:02:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:02:26,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-22 02:02:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:26,656 INFO L225 Difference]: With dead ends: 1906 [2020-08-22 02:02:26,656 INFO L226 Difference]: Without dead ends: 1903 [2020-08-22 02:02:26,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 02:02:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-08-22 02:02:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1456. [2020-08-22 02:02:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-08-22 02:02:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1720 transitions. [2020-08-22 02:02:26,985 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1720 transitions. Word has length 88 [2020-08-22 02:02:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:26,987 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 1720 transitions. [2020-08-22 02:02:26,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:02:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1720 transitions. [2020-08-22 02:02:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-22 02:02:26,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:26,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:02:26,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:02:26,997 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:26,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:26,997 INFO L82 PathProgramCache]: Analyzing trace with hash 475998026, now seen corresponding path program 1 times [2020-08-22 02:02:26,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:26,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288398012] [2020-08-22 02:02:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:02:27,072 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:02:27,073 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:02:27,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:02:27,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:02:27 BoogieIcfgContainer [2020-08-22 02:02:27,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:02:27,132 INFO L168 Benchmark]: Toolchain (without parser) took 35081.84 ms. Allocated memory was 141.0 MB in the beginning and 723.5 MB in the end (delta: 582.5 MB). Free memory was 103.2 MB in the beginning and 551.7 MB in the end (delta: -448.5 MB). Peak memory consumption was 134.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:02:27,132 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:02:27,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.96 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 174.2 MB in the end (delta: -71.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:02:27,134 INFO L168 Benchmark]: Boogie Preprocessor took 134.46 ms. Allocated memory is still 204.5 MB. Free memory was 174.2 MB in the beginning and 169.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:02:27,134 INFO L168 Benchmark]: RCFGBuilder took 1157.07 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 169.9 MB in the beginning and 194.5 MB in the end (delta: -24.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:02:27,135 INFO L168 Benchmark]: TraceAbstraction took 33145.31 ms. Allocated memory was 234.9 MB in the beginning and 723.5 MB in the end (delta: 488.6 MB). Free memory was 194.5 MB in the beginning and 551.7 MB in the end (delta: -357.1 MB). Peak memory consumption was 131.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:02:27,138 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.96 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 174.2 MB in the end (delta: -71.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.46 ms. Allocated memory is still 204.5 MB. Free memory was 174.2 MB in the beginning and 169.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1157.07 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 169.9 MB in the beginning and 194.5 MB in the end (delta: -24.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33145.31 ms. Allocated memory was 234.9 MB in the beginning and 723.5 MB in the end (delta: 488.6 MB). Free memory was 194.5 MB in the beginning and 551.7 MB in the end (delta: -357.1 MB). Peak memory consumption was 131.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 900]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int cleanupTimeShifts = 4; [L651] int pumpRunning = 0; [L652] int systemActive = 1; [L905] int methAndRunningLastTime ; [L623] int retValue_acc ; [L624] int tmp ; [L628] FCALL select_helpers() [L629] FCALL select_features() [L630] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L630] RET, EXPR valid_product() [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L634] FCALL setup() [L635] CALL runTest() [L616] CALL __utac_acc__Specification2_spec__1() [L910] methAndRunningLastTime = 0 [L616] RET __utac_acc__Specification2_spec__1() [L617] CALL test() [L828] int splverifierCounter ; [L829] int tmp ; [L830] int tmp___0 ; [L831] int tmp___1 ; [L832] int tmp___2 ; [L835] splverifierCounter = 0 [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp) [L849] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L849] RET waterRise() [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp___0) [L859] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L859] RET changeMethaneLevel() [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) [L884] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L785] int retValue_acc ; [L786] int tmp ; [L787] int tmp___0 ; [L791] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L791] RET, EXPR isHighWaterSensorDry() [L791] tmp = isHighWaterSensorDry() [L793] COND FALSE !(\read(tmp)) [L796] tmp___0 = 1 [L798] retValue_acc = tmp___0 [L799] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L716] pumpRunning = 1 [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND FALSE !(\read(methAndRunningLastTime)) [L932] methAndRunningLastTime = 1 [L674] RET __utac_acc__Specification2_spec__2() [L884] RET timeShift() [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp)) [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp___0)) [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) [L884] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND TRUE \read(methAndRunningLastTime) [L929] CALL __automaton_fail() [L900] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 26.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 960 SDtfs, 2942 SDslu, 1457 SDs, 0 SdLazy, 6243 SolverSat, 2309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1456occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 2054 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 759 NumberOfCodeBlocks, 759 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 192303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...