/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:35:49,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:35:49,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:35:49,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:35:49,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:35:49,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:35:49,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:35:49,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:35:49,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:35:49,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:35:49,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:35:49,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:35:49,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:35:49,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:35:49,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:35:49,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:35:49,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:35:49,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:35:49,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:35:49,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:35:49,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:35:49,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:35:49,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:35:49,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:35:49,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:35:49,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:35:49,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:35:49,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:35:49,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:35:49,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:35:49,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:35:49,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:35:49,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:35:49,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:35:49,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:35:49,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:35:49,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:35:49,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:35:49,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:35:49,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:35:49,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:35:49,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:35:49,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:35:49,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:35:49,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:35:49,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:35:49,860 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:35:49,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:35:49,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:35:49,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:35:49,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:35:49,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:35:49,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:35:49,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:35:49,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:35:49,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:35:49,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:35:49,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:35:49,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:35:49,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:35:49,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:35:49,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:35:49,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:35:49,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:35:49,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:35:49,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:35:49,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:35:49,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:35:49,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:35:49,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:35:49,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:35:49,867 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=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:35:50,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:35:50,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:35:50,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:35:50,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:35:50,205 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:35:50,206 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-18 22:35:50,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ddead44c/7edbe2c23e7341b18eb29ac2ac3b9873/FLAG6d4fc145f [2020-08-18 22:35:50,800 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:35:50,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-18 22:35:50,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ddead44c/7edbe2c23e7341b18eb29ac2ac3b9873/FLAG6d4fc145f [2020-08-18 22:35:51,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ddead44c/7edbe2c23e7341b18eb29ac2ac3b9873 [2020-08-18 22:35:51,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:35:51,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:35:51,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:35:51,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:35:51,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:35:51,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e065585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51, skipping insertion in model container [2020-08-18 22:35:51,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:35:51,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:35:51,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:35:51,601 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:35:51,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:35:51,745 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:35:51,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51 WrapperNode [2020-08-18 22:35:51,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:35:51,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:35:51,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:35:51,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:35:51,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (1/1) ... [2020-08-18 22:35:51,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:35:51,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:35:51,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:35:51,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:35:51,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (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 [2020-08-18 22:35:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:35:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:35:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:35:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:35:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:35:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:35:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:35:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:35:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:35:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:35:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:35:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:35:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:35:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:35:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:35:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:35:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:35:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:35:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 22:35:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:35:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:35:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:35:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:35:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:35:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:35:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:35:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:35:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 22:35:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:35:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:35:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:35:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:35:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:35:51,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:35:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:35:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:35:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:35:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:35:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:35:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:35:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:35:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:35:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:35:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:35:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:35:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:35:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:35:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:35:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:35:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:35:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:35:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:35:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:35:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:35:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:35:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:35:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:35:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:35:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:35:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:35:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:35:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:35:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:35:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:35:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:35:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:35:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:35:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:35:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:35:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:35:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:35:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:35:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:35:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:35:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:35:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:35:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:35:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:35:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:35:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:35:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:35:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:35:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:35:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 22:35:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:35:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:35:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:35:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 22:35:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:35:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:35:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:35:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:35:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:35:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:35:52,963 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:35:52,963 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:35:52,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:35:52 BoogieIcfgContainer [2020-08-18 22:35:52,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:35:52,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:35:52,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:35:52,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:35:52,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:35:51" (1/3) ... [2020-08-18 22:35:52,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c2b2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:35:52, skipping insertion in model container [2020-08-18 22:35:52,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:51" (2/3) ... [2020-08-18 22:35:52,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c2b2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:35:52, skipping insertion in model container [2020-08-18 22:35:52,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:35:52" (3/3) ... [2020-08-18 22:35:52,976 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-08-18 22:35:52,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:35:52,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:35:53,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:35:53,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:35:53,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:35:53,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:35:53,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:35:53,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:35:53,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:35:53,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:35:53,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:35:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-18 22:35:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 22:35:53,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:53,064 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] [2020-08-18 22:35:53,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:53,071 INFO L82 PathProgramCache]: Analyzing trace with hash 580316159, now seen corresponding path program 1 times [2020-08-18 22:35:53,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:53,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696928131] [2020-08-18 22:35:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,689 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:35:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:35:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:35:53,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696928131] [2020-08-18 22:35:53,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:53,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:35:53,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333634644] [2020-08-18 22:35:53,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:35:53,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:53,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:35:53,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:35:53,798 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-18 22:35:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:54,948 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2020-08-18 22:35:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:35:54,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 22:35:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:54,966 INFO L225 Difference]: With dead ends: 318 [2020-08-18 22:35:54,966 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 22:35:54,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:35:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 22:35:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2020-08-18 22:35:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-18 22:35:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-18 22:35:55,087 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 46 [2020-08-18 22:35:55,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:55,089 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-18 22:35:55,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:35:55,089 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-18 22:35:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 22:35:55,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:55,095 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] [2020-08-18 22:35:55,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:35:55,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:55,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:55,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2039927443, now seen corresponding path program 1 times [2020-08-18 22:35:55,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:55,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913205742] [2020-08-18 22:35:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:55,464 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:55,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:55,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:35:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:55,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:35:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:35:55,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913205742] [2020-08-18 22:35:55,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:55,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:35:55,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401015114] [2020-08-18 22:35:55,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:35:55,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:55,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:35:55,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:35:55,510 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 4 states. [2020-08-18 22:35:55,944 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:56,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:56,805 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-08-18 22:35:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:35:56,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 22:35:56,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:56,809 INFO L225 Difference]: With dead ends: 247 [2020-08-18 22:35:56,809 INFO L226 Difference]: Without dead ends: 156 [2020-08-18 22:35:56,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:35:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-18 22:35:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-18 22:35:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 22:35:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-18 22:35:56,850 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2020-08-18 22:35:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:56,850 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-18 22:35:56,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:35:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-18 22:35:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:35:56,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:56,853 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] [2020-08-18 22:35:56,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:35:56,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:56,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987703, now seen corresponding path program 1 times [2020-08-18 22:35:56,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:56,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685852107] [2020-08-18 22:35:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,181 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:57,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:35:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:35:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:35:57,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685852107] [2020-08-18 22:35:57,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:57,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:35:57,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925801798] [2020-08-18 22:35:57,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:35:57,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:57,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:35:57,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:35:57,259 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 8 states. [2020-08-18 22:35:57,708 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:57,965 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:58,207 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:58,449 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:59,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:59,640 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2020-08-18 22:35:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:35:59,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 22:35:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:59,646 INFO L225 Difference]: With dead ends: 260 [2020-08-18 22:35:59,646 INFO L226 Difference]: Without dead ends: 156 [2020-08-18 22:35:59,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:35:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-18 22:35:59,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-18 22:35:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 22:35:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-18 22:35:59,683 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 52 [2020-08-18 22:35:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:59,683 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-18 22:35:59,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:35:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-18 22:35:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 22:35:59,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:59,685 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] [2020-08-18 22:35:59,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:35:59,686 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1745786735, now seen corresponding path program 1 times [2020-08-18 22:35:59,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:59,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963975332] [2020-08-18 22:35:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,964 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:36:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 22:36:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 22:36:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:00,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963975332] [2020-08-18 22:36:00,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:00,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:36:00,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570428592] [2020-08-18 22:36:00,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:36:00,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:00,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:36:00,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:36:00,098 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 6 states. [2020-08-18 22:36:00,420 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:01,624 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:02,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:02,238 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2020-08-18 22:36:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:36:02,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 22:36:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:02,242 INFO L225 Difference]: With dead ends: 365 [2020-08-18 22:36:02,242 INFO L226 Difference]: Without dead ends: 261 [2020-08-18 22:36:02,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:36:02,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-08-18 22:36:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 218. [2020-08-18 22:36:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 22:36:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 245 transitions. [2020-08-18 22:36:02,288 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 245 transitions. Word has length 65 [2020-08-18 22:36:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:02,288 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 245 transitions. [2020-08-18 22:36:02,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:36:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 245 transitions. [2020-08-18 22:36:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 22:36:02,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:02,290 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] [2020-08-18 22:36:02,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:36:02,291 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash 189412453, now seen corresponding path program 1 times [2020-08-18 22:36:02,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:02,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058513068] [2020-08-18 22:36:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,544 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:02,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:36:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:36:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 22:36:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:02,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058513068] [2020-08-18 22:36:02,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:02,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 22:36:02,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566301327] [2020-08-18 22:36:02,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:36:02,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:02,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:36:02,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:36:02,697 INFO L87 Difference]: Start difference. First operand 218 states and 245 transitions. Second operand 11 states. [2020-08-18 22:36:03,270 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:03,504 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:03,721 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:04,409 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:04,638 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:04,879 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:05,104 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:06,050 INFO L93 Difference]: Finished difference Result 456 states and 540 transitions. [2020-08-18 22:36:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:36:06,051 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-18 22:36:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:06,054 INFO L225 Difference]: With dead ends: 456 [2020-08-18 22:36:06,054 INFO L226 Difference]: Without dead ends: 262 [2020-08-18 22:36:06,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:36:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-18 22:36:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2020-08-18 22:36:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-18 22:36:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2020-08-18 22:36:06,099 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 79 [2020-08-18 22:36:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:06,100 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2020-08-18 22:36:06,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:36:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2020-08-18 22:36:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 22:36:06,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:06,101 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] [2020-08-18 22:36:06,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:36:06,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:06,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:06,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1196790941, now seen corresponding path program 1 times [2020-08-18 22:36:06,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:06,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683334673] [2020-08-18 22:36:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,400 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:06,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:36:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:36:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 22:36:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:06,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683334673] [2020-08-18 22:36:06,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:06,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:36:06,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455794000] [2020-08-18 22:36:06,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:06,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:06,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:06,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:06,522 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand 12 states. [2020-08-18 22:36:07,154 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:07,471 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:07,706 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:07,939 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:08,420 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:09,352 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:09,647 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:09,895 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:10,137 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:10,440 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:10,698 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:11,979 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:12,333 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:12,986 INFO L93 Difference]: Finished difference Result 795 states and 1004 transitions. [2020-08-18 22:36:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 22:36:12,987 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 22:36:12,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:12,993 INFO L225 Difference]: With dead ends: 795 [2020-08-18 22:36:12,994 INFO L226 Difference]: Without dead ends: 596 [2020-08-18 22:36:12,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 22:36:12,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-08-18 22:36:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 534. [2020-08-18 22:36:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-08-18 22:36:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 617 transitions. [2020-08-18 22:36:13,098 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 617 transitions. Word has length 79 [2020-08-18 22:36:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:13,099 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 617 transitions. [2020-08-18 22:36:13,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 617 transitions. [2020-08-18 22:36:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 22:36:13,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:13,103 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, 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] [2020-08-18 22:36:13,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:36:13,104 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:13,104 INFO L82 PathProgramCache]: Analyzing trace with hash 754253541, now seen corresponding path program 1 times [2020-08-18 22:36:13,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:13,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187654529] [2020-08-18 22:36:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,383 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:13,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 22:36:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 22:36:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 22:36:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 22:36:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 22:36:13,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187654529] [2020-08-18 22:36:13,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:13,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 22:36:13,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158453918] [2020-08-18 22:36:13,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:36:13,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:13,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:36:13,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:36:13,670 INFO L87 Difference]: Start difference. First operand 534 states and 617 transitions. Second operand 11 states. [2020-08-18 22:36:14,386 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 22:36:14,913 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:16,613 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 22:36:18,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:18,167 INFO L93 Difference]: Finished difference Result 1040 states and 1284 transitions. [2020-08-18 22:36:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 22:36:18,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-18 22:36:18,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:18,172 INFO L225 Difference]: With dead ends: 1040 [2020-08-18 22:36:18,172 INFO L226 Difference]: Without dead ends: 660 [2020-08-18 22:36:18,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-18 22:36:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-08-18 22:36:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 618. [2020-08-18 22:36:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-18 22:36:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 733 transitions. [2020-08-18 22:36:18,304 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 733 transitions. Word has length 154 [2020-08-18 22:36:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:18,305 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 733 transitions. [2020-08-18 22:36:18,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:36:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 733 transitions. [2020-08-18 22:36:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 22:36:18,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:18,308 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:18,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:36:18,308 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:18,309 INFO L82 PathProgramCache]: Analyzing trace with hash -205804435, now seen corresponding path program 1 times [2020-08-18 22:36:18,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:18,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458994284] [2020-08-18 22:36:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,566 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:36:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:36:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 22:36:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:36:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 22:36:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 22:36:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 22:36:18,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458994284] [2020-08-18 22:36:18,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:18,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:36:18,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040031740] [2020-08-18 22:36:18,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:18,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:18,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:18,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:18,812 INFO L87 Difference]: Start difference. First operand 618 states and 733 transitions. Second operand 12 states. [2020-08-18 22:36:19,672 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:20,017 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:20,283 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:20,878 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:21,120 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:21,348 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:22,423 INFO L93 Difference]: Finished difference Result 1241 states and 1528 transitions. [2020-08-18 22:36:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:36:22,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-18 22:36:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:22,433 INFO L225 Difference]: With dead ends: 1241 [2020-08-18 22:36:22,433 INFO L226 Difference]: Without dead ends: 647 [2020-08-18 22:36:22,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:36:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-08-18 22:36:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 608. [2020-08-18 22:36:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-08-18 22:36:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 720 transitions. [2020-08-18 22:36:22,570 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 720 transitions. Word has length 143 [2020-08-18 22:36:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:22,571 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 720 transitions. [2020-08-18 22:36:22,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 720 transitions. [2020-08-18 22:36:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 22:36:22,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:22,575 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:22,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:36:22,575 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:22,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:22,576 INFO L82 PathProgramCache]: Analyzing trace with hash 677704555, now seen corresponding path program 1 times [2020-08-18 22:36:22,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:22,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224769564] [2020-08-18 22:36:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,963 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:22,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:36:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:36:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 22:36:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:36:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 22:36:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 22:36:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 22:36:23,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224769564] [2020-08-18 22:36:23,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:23,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:36:23,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835052537] [2020-08-18 22:36:23,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:36:23,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:23,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:36:23,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:36:23,183 INFO L87 Difference]: Start difference. First operand 608 states and 720 transitions. Second operand 10 states. [2020-08-18 22:36:24,115 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:24,344 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:36:24,570 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:24,793 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:25,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:25,683 INFO L93 Difference]: Finished difference Result 1115 states and 1379 transitions. [2020-08-18 22:36:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:36:25,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-18 22:36:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:25,691 INFO L225 Difference]: With dead ends: 1115 [2020-08-18 22:36:25,691 INFO L226 Difference]: Without dead ends: 531 [2020-08-18 22:36:25,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:36:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-18 22:36:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 503. [2020-08-18 22:36:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-18 22:36:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 592 transitions. [2020-08-18 22:36:25,835 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 592 transitions. Word has length 143 [2020-08-18 22:36:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:25,836 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 592 transitions. [2020-08-18 22:36:25,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:36:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 592 transitions. [2020-08-18 22:36:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 22:36:25,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:25,840 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:25,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:36:25,840 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:25,841 INFO L82 PathProgramCache]: Analyzing trace with hash 744245076, now seen corresponding path program 1 times [2020-08-18 22:36:25,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:25,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662081553] [2020-08-18 22:36:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,095 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:26,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 22:36:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 22:36:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:36:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 22:36:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 22:36:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 22:36:26,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662081553] [2020-08-18 22:36:26,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:26,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 22:36:26,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580877223] [2020-08-18 22:36:26,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 22:36:26,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:26,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 22:36:26,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:36:26,413 INFO L87 Difference]: Start difference. First operand 503 states and 592 transitions. Second operand 15 states. [2020-08-18 22:36:26,991 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:27,688 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:28,606 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:28,917 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:29,167 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:29,434 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:29,733 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:29,989 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:30,525 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 22:36:31,019 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 22:36:31,846 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:32,073 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:32,328 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:32,560 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:33,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:33,218 INFO L93 Difference]: Finished difference Result 1337 states and 1633 transitions. [2020-08-18 22:36:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 22:36:33,219 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-18 22:36:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:33,226 INFO L225 Difference]: With dead ends: 1337 [2020-08-18 22:36:33,226 INFO L226 Difference]: Without dead ends: 858 [2020-08-18 22:36:33,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 22:36:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-18 22:36:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 816. [2020-08-18 22:36:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-18 22:36:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 943 transitions. [2020-08-18 22:36:33,430 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 943 transitions. Word has length 147 [2020-08-18 22:36:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:33,433 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 943 transitions. [2020-08-18 22:36:33,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 22:36:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 943 transitions. [2020-08-18 22:36:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 22:36:33,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:33,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:33,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:36:33,437 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash 857110512, now seen corresponding path program 1 times [2020-08-18 22:36:33,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:33,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841866384] [2020-08-18 22:36:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,720 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 22:36:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 22:36:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 22:36:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:36:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 22:36:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 22:36:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-18 22:36:33,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841866384] [2020-08-18 22:36:33,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:33,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 22:36:33,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987300808] [2020-08-18 22:36:33,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:36:33,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:33,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:36:33,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:36:33,929 INFO L87 Difference]: Start difference. First operand 816 states and 943 transitions. Second operand 11 states. [2020-08-18 22:36:34,514 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:36,209 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:36,441 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:36,686 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:36,936 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:37,158 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:37,670 INFO L93 Difference]: Finished difference Result 967 states and 1196 transitions. [2020-08-18 22:36:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 22:36:37,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-08-18 22:36:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:37,677 INFO L225 Difference]: With dead ends: 967 [2020-08-18 22:36:37,678 INFO L226 Difference]: Without dead ends: 964 [2020-08-18 22:36:37,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-18 22:36:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-08-18 22:36:37,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 816. [2020-08-18 22:36:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-18 22:36:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 940 transitions. [2020-08-18 22:36:37,850 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 940 transitions. Word has length 151 [2020-08-18 22:36:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:37,852 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 940 transitions. [2020-08-18 22:36:37,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:36:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 940 transitions. [2020-08-18 22:36:37,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 22:36:37,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:37,855 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:37,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:36:37,856 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:37,856 INFO L82 PathProgramCache]: Analyzing trace with hash -671566746, now seen corresponding path program 1 times [2020-08-18 22:36:37,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:37,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688762736] [2020-08-18 22:36:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,127 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:38,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 22:36:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 22:36:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:36:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 22:36:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 22:36:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 22:36:38,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688762736] [2020-08-18 22:36:38,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:38,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:36:38,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678402031] [2020-08-18 22:36:38,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:38,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:38,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:38,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:38,290 INFO L87 Difference]: Start difference. First operand 816 states and 940 transitions. Second operand 12 states. [2020-08-18 22:36:38,679 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:39,226 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:40,006 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:40,282 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:40,512 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:40,752 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:41,027 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:41,280 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:42,541 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:43,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:43,272 INFO L93 Difference]: Finished difference Result 1937 states and 2374 transitions. [2020-08-18 22:36:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 22:36:43,273 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-18 22:36:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:43,280 INFO L225 Difference]: With dead ends: 1937 [2020-08-18 22:36:43,280 INFO L226 Difference]: Without dead ends: 1271 [2020-08-18 22:36:43,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 22:36:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2020-08-18 22:36:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1102. [2020-08-18 22:36:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-18 22:36:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1285 transitions. [2020-08-18 22:36:43,619 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1285 transitions. Word has length 151 [2020-08-18 22:36:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:43,619 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1285 transitions. [2020-08-18 22:36:43,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1285 transitions. [2020-08-18 22:36:43,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-08-18 22:36:43,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:43,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 22:36:43,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 22:36:43,625 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:43,625 INFO L82 PathProgramCache]: Analyzing trace with hash -939199605, now seen corresponding path program 2 times [2020-08-18 22:36:43,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:43,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574967023] [2020-08-18 22:36:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:36:43,686 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:36:43,687 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:36:43,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 22:36:43,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:36:43 BoogieIcfgContainer [2020-08-18 22:36:43,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:36:43,741 INFO L168 Benchmark]: Toolchain (without parser) took 52671.02 ms. Allocated memory was 142.6 MB in the beginning and 699.9 MB in the end (delta: 557.3 MB). Free memory was 104.7 MB in the beginning and 533.0 MB in the end (delta: -428.3 MB). Peak memory consumption was 129.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:43,743 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.2 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:36:43,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.54 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 104.5 MB in the beginning and 173.1 MB in the end (delta: -68.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:43,749 INFO L168 Benchmark]: Boogie Preprocessor took 85.06 ms. Allocated memory is still 204.5 MB. Free memory was 173.1 MB in the beginning and 168.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:43,750 INFO L168 Benchmark]: RCFGBuilder took 1137.04 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 168.6 MB in the beginning and 188.9 MB in the end (delta: -20.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:43,751 INFO L168 Benchmark]: TraceAbstraction took 50770.12 ms. Allocated memory was 234.4 MB in the beginning and 699.9 MB in the end (delta: 465.6 MB). Free memory was 188.9 MB in the beginning and 533.0 MB in the end (delta: -344.1 MB). Peak memory consumption was 121.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:43,754 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.2 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.54 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 104.5 MB in the beginning and 173.1 MB in the end (delta: -68.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.06 ms. Allocated memory is still 204.5 MB. Free memory was 173.1 MB in the beginning and 168.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1137.04 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 168.6 MB in the beginning and 188.9 MB in the end (delta: -20.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50770.12 ms. Allocated memory was 234.4 MB in the beginning and 699.9 MB in the end (delta: 465.6 MB). Free memory was 188.9 MB in the beginning and 533.0 MB in the end (delta: -344.1 MB). Peak memory consumption was 121.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L758] int waterLevel = 1; [L759] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L945] int retValue_acc ; [L948] retValue_acc = 1 [L949] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L853] int splverifierCounter ; [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L857] int tmp___2 ; [L860] splverifierCounter = 0 [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND TRUE \read(tmp) [L874] CALL waterRise() [L776] COND TRUE waterLevel < 2 [L777] waterLevel = waterLevel + 1 [L874] RET waterRise() [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND FALSE !(\read(pumpRunning)) [L635] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L731] int retValue_acc ; [L732] int tmp ; [L733] int tmp___0 ; [L737] CALL, EXPR isHighWaterSensorDry() [L838] int retValue_acc ; [L841] COND FALSE !(waterLevel < 2) [L845] retValue_acc = 0 [L846] return (retValue_acc); [L737] RET, EXPR isHighWaterSensorDry() [L737] tmp = isHighWaterSensorDry() [L739] COND FALSE !(\read(tmp)) [L742] tmp___0 = 1 [L744] retValue_acc = tmp___0 [L745] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L650] int tmp ; [L654] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L654] RET, EXPR isMethaneAlarm() [L654] tmp = isMethaneAlarm() [L656] COND FALSE !(\read(tmp)) [L660] CALL activatePump__wrappee__highWaterSensor() [L645] pumpRunning = 1 [L660] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L635] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND TRUE tmp == 0 [L157] CALL, EXPR isPumpRunning() [L686] int retValue_acc ; [L689] retValue_acc = pumpRunning [L690] return (retValue_acc); [L157] RET, EXPR isPumpRunning() [L157] tmp___0 = isPumpRunning() [L159] COND TRUE \read(tmp___0) [L161] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.6s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 43.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1602 SDtfs, 4231 SDslu, 2046 SDs, 0 SdLazy, 11187 SolverSat, 2942 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 452 SyntacticMatches, 7 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=12, 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, 12 MinimizatonAttempts, 703 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 1460 NumberOfCodeBlocks, 1460 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1245 ConstructedInterpolants, 0 QuantifiedInterpolants, 474746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 188/217 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...