/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:24:08,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:24:08,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:24:08,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:24:08,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:24:08,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:24:08,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:24:08,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:24:08,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:24:08,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:24:08,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:24:08,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:24:08,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:24:08,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:24:08,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:24:08,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:24:08,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:24:08,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:24:08,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:24:08,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:24:08,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:24:08,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:24:08,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:24:08,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:24:08,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:24:08,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:24:08,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:24:08,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:24:08,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:24:08,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:24:08,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:24:08,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:24:08,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:24:08,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:24:08,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:24:08,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:24:08,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:24:08,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:24:08,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:24:08,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:24:08,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:24:08,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:24:08,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:24:08,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:24:08,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:24:08,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:24:08,809 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:24:08,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:24:08,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:24:08,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:24:08,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:24:08,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:24:08,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:24:08,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:24:08,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:24:08,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:24:08,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:24:08,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:24:08,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:24:08,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:24:08,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:24:08,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:24:08,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:24:08,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:24:08,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:24:08,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:24:08,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:24:08,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:24:08,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:24:08,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:24:08,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:24:08,815 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:24:09,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:24:09,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:24:09,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:24:09,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:24:09,140 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:24:09,140 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-21 16:24:09,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a96e899a6/dfd782807adf45bbbc96510cc7d7a887/FLAG8f633650f [2020-08-21 16:24:09,714 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:24:09,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-21 16:24:09,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a96e899a6/dfd782807adf45bbbc96510cc7d7a887/FLAG8f633650f [2020-08-21 16:24:10,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a96e899a6/dfd782807adf45bbbc96510cc7d7a887 [2020-08-21 16:24:10,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:24:10,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:24:10,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:24:10,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:24:10,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:24:10,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec48d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10, skipping insertion in model container [2020-08-21 16:24:10,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:24:10,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:24:10,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:24:10,555 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:24:10,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:24:10,675 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:24:10,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10 WrapperNode [2020-08-21 16:24:10,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:24:10,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:24:10,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:24:10,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:24:10,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (1/1) ... [2020-08-21 16:24:10,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:24:10,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:24:10,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:24:10,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:24:10,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:24:10,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:24:10,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:24:10,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:24:10,838 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:24:10,838 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:24:10,839 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:24:10,839 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:24:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:24:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:24:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:24:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:24:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:24:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:24:10,842 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:24:10,842 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:24:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:24:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:24:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:24:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:24:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:24:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:24:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:24:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:24:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:24:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 16:24:10,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:24:10,847 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:24:10,848 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:24:10,848 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:24:10,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:24:10,848 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:24:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:24:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:24:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:24:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:24:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:24:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:24:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:24:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 16:24:10,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:24:10,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:24:10,850 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:24:10,850 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:24:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:24:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:24:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:24:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:24:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:24:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:24:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:24:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:24:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:24:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:24:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:24:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:24:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:24:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:24:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:24:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:24:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:24:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:24:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:24:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:24:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:24:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:24:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 16:24:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:24:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:24:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:24:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:24:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:24:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:24:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:24:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:24:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:24:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:24:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:24:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 16:24:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:24:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:24:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:24:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:24:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:24:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:24:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:24:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:24:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:24:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:24:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:24:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:24:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:24:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:24:11,852 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:24:11,852 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:24:11,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:24:11 BoogieIcfgContainer [2020-08-21 16:24:11,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:24:11,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:24:11,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:24:11,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:24:11,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:24:10" (1/3) ... [2020-08-21 16:24:11,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e2393f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:24:11, skipping insertion in model container [2020-08-21 16:24:11,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:10" (2/3) ... [2020-08-21 16:24:11,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e2393f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:24:11, skipping insertion in model container [2020-08-21 16:24:11,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:24:11" (3/3) ... [2020-08-21 16:24:11,866 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-08-21 16:24:11,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:24:11,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:24:11,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:24:11,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:24:11,923 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:24:11,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:24:11,924 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:24:11,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:24:11,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:24:11,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:24:11,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:24:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 16:24:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 16:24:11,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:11,958 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] [2020-08-21 16:24:11,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1123456625, now seen corresponding path program 1 times [2020-08-21 16:24:11,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:11,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930118589] [2020-08-21 16:24:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,642 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:12,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:24:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:24:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:12,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930118589] [2020-08-21 16:24:12,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:12,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:24:12,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660564868] [2020-08-21 16:24:12,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:24:12,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:12,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:24:12,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:24:12,747 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-21 16:24:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:13,900 INFO L93 Difference]: Finished difference Result 307 states and 401 transitions. [2020-08-21 16:24:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:24:13,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 16:24:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:13,926 INFO L225 Difference]: With dead ends: 307 [2020-08-21 16:24:13,926 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 16:24:13,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:24:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 16:24:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2020-08-21 16:24:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 16:24:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-21 16:24:14,017 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46 [2020-08-21 16:24:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:14,017 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-21 16:24:14,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:24:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-21 16:24:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 16:24:14,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:14,021 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] [2020-08-21 16:24:14,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:24:14,022 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash -790150173, now seen corresponding path program 1 times [2020-08-21 16:24:14,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:14,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320297795] [2020-08-21 16:24:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,347 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:24:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:24:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:14,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320297795] [2020-08-21 16:24:14,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:14,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:24:14,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238193068] [2020-08-21 16:24:14,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:24:14,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:14,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:24:14,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:24:14,391 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 4 states. [2020-08-21 16:24:14,775 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:15,592 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-08-21 16:24:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:24:15,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 16:24:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:15,596 INFO L225 Difference]: With dead ends: 234 [2020-08-21 16:24:15,596 INFO L226 Difference]: Without dead ends: 150 [2020-08-21 16:24:15,598 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 [2020-08-21 16:24:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-21 16:24:15,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2020-08-21 16:24:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 16:24:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-21 16:24:15,637 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47 [2020-08-21 16:24:15,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:15,638 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-21 16:24:15,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:24:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-21 16:24:15,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 16:24:15,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:15,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:15,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:24:15,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:15,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:15,641 INFO L82 PathProgramCache]: Analyzing trace with hash 271076632, now seen corresponding path program 1 times [2020-08-21 16:24:15,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:15,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393975274] [2020-08-21 16:24:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:15,972 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:24:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:24:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:16,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393975274] [2020-08-21 16:24:16,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:16,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:24:16,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598796364] [2020-08-21 16:24:16,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:24:16,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:16,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:24:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:24:16,057 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 8 states. [2020-08-21 16:24:16,401 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:16,681 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:16,926 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:17,152 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:17,847 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:19,485 INFO L93 Difference]: Finished difference Result 421 states and 521 transitions. [2020-08-21 16:24:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:24:19,486 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 16:24:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:19,495 INFO L225 Difference]: With dead ends: 421 [2020-08-21 16:24:19,495 INFO L226 Difference]: Without dead ends: 322 [2020-08-21 16:24:19,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:24:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-21 16:24:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 264. [2020-08-21 16:24:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-21 16:24:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 318 transitions. [2020-08-21 16:24:19,580 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 318 transitions. Word has length 51 [2020-08-21 16:24:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:19,580 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 318 transitions. [2020-08-21 16:24:19,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:24:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 318 transitions. [2020-08-21 16:24:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 16:24:19,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:19,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:19,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:24:19,585 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:19,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1813365187, now seen corresponding path program 1 times [2020-08-21 16:24:19,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:19,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577920102] [2020-08-21 16:24:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,900 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:24:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:24:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:20,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 16:24:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:20,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577920102] [2020-08-21 16:24:20,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:20,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:24:20,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281049777] [2020-08-21 16:24:20,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:24:20,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:20,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:24:20,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:20,018 INFO L87 Difference]: Start difference. First operand 264 states and 318 transitions. Second operand 12 states. [2020-08-21 16:24:20,511 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:20,785 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:21,031 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:21,290 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:21,806 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:22,555 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:22,913 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:23,241 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:23,530 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:23,771 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:24,219 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:24,549 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:24,804 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:26,401 INFO L93 Difference]: Finished difference Result 1065 states and 1468 transitions. [2020-08-21 16:24:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 16:24:26,402 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 16:24:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:26,413 INFO L225 Difference]: With dead ends: 1065 [2020-08-21 16:24:26,413 INFO L226 Difference]: Without dead ends: 825 [2020-08-21 16:24:26,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 16:24:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-08-21 16:24:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 732. [2020-08-21 16:24:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-21 16:24:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 932 transitions. [2020-08-21 16:24:26,577 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 932 transitions. Word has length 57 [2020-08-21 16:24:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:26,577 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 932 transitions. [2020-08-21 16:24:26,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:24:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 932 transitions. [2020-08-21 16:24:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 16:24:26,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:26,582 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] [2020-08-21 16:24:26,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:24:26,583 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:26,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:26,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2128676035, now seen corresponding path program 1 times [2020-08-21 16:24:26,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:26,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809882927] [2020-08-21 16:24:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,886 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:24:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 16:24:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:24:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 16:24:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:26,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809882927] [2020-08-21 16:24:26,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:26,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:24:26,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775518280] [2020-08-21 16:24:26,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:24:26,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:27,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:24:27,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:24:27,000 INFO L87 Difference]: Start difference. First operand 732 states and 932 transitions. Second operand 6 states. [2020-08-21 16:24:27,293 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:28,942 INFO L93 Difference]: Finished difference Result 1759 states and 2407 transitions. [2020-08-21 16:24:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 16:24:28,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 16:24:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:28,952 INFO L225 Difference]: With dead ends: 1759 [2020-08-21 16:24:28,952 INFO L226 Difference]: Without dead ends: 1051 [2020-08-21 16:24:28,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:24:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-08-21 16:24:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 964. [2020-08-21 16:24:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-08-21 16:24:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1220 transitions. [2020-08-21 16:24:29,175 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1220 transitions. Word has length 61 [2020-08-21 16:24:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:29,176 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 1220 transitions. [2020-08-21 16:24:29,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:24:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1220 transitions. [2020-08-21 16:24:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 16:24:29,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:29,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:29,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:24:29,181 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1754610703, now seen corresponding path program 1 times [2020-08-21 16:24:29,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:29,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956958628] [2020-08-21 16:24:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,482 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:29,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:24:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:24:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:24:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 16:24:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 16:24:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 16:24:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 16:24:29,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956958628] [2020-08-21 16:24:29,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:29,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:24:29,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655765972] [2020-08-21 16:24:29,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:24:29,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:29,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:24:29,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:24:29,630 INFO L87 Difference]: Start difference. First operand 964 states and 1220 transitions. Second operand 10 states. [2020-08-21 16:24:30,374 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 16:24:30,869 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:32,588 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:34,206 INFO L93 Difference]: Finished difference Result 1865 states and 2457 transitions. [2020-08-21 16:24:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 16:24:34,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 16:24:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:34,218 INFO L225 Difference]: With dead ends: 1865 [2020-08-21 16:24:34,218 INFO L226 Difference]: Without dead ends: 1168 [2020-08-21 16:24:34,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-21 16:24:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-21 16:24:34,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1071. [2020-08-21 16:24:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-21 16:24:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1331 transitions. [2020-08-21 16:24:34,429 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1331 transitions. Word has length 88 [2020-08-21 16:24:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:34,431 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1331 transitions. [2020-08-21 16:24:34,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:24:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1331 transitions. [2020-08-21 16:24:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-21 16:24:34,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:34,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:34,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:24:34,437 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:34,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:34,437 INFO L82 PathProgramCache]: Analyzing trace with hash 974998865, now seen corresponding path program 1 times [2020-08-21 16:24:34,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:34,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644613871] [2020-08-21 16:24:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,687 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:24:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 16:24:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 16:24:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 16:24:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:24:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 16:24:34,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644613871] [2020-08-21 16:24:34,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:34,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:24:34,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688889022] [2020-08-21 16:24:34,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:24:34,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:34,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:24:34,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:24:34,862 INFO L87 Difference]: Start difference. First operand 1071 states and 1331 transitions. Second operand 10 states. [2020-08-21 16:24:36,109 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:36,346 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:24:36,588 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:36,822 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:37,832 INFO L93 Difference]: Finished difference Result 2259 states and 2935 transitions. [2020-08-21 16:24:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:24:37,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-08-21 16:24:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:37,842 INFO L225 Difference]: With dead ends: 2259 [2020-08-21 16:24:37,842 INFO L226 Difference]: Without dead ends: 1212 [2020-08-21 16:24:37,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:24:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-08-21 16:24:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1101. [2020-08-21 16:24:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-08-21 16:24:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1365 transitions. [2020-08-21 16:24:38,130 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1365 transitions. Word has length 126 [2020-08-21 16:24:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:38,131 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1365 transitions. [2020-08-21 16:24:38,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:24:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1365 transitions. [2020-08-21 16:24:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 16:24:38,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:38,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:38,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:24:38,138 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:38,138 INFO L82 PathProgramCache]: Analyzing trace with hash 920016537, now seen corresponding path program 1 times [2020-08-21 16:24:38,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:38,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726379363] [2020-08-21 16:24:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,416 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:24:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 16:24:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:24:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:24:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 16:24:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 16:24:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 16:24:38,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726379363] [2020-08-21 16:24:38,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:38,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:24:38,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428455129] [2020-08-21 16:24:38,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:24:38,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:38,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:24:38,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:38,605 INFO L87 Difference]: Start difference. First operand 1101 states and 1365 transitions. Second operand 12 states. [2020-08-21 16:24:39,191 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:39,413 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:39,646 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:40,250 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:40,496 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:40,722 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:41,729 INFO L93 Difference]: Finished difference Result 2069 states and 2643 transitions. [2020-08-21 16:24:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:24:41,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 16:24:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:41,736 INFO L225 Difference]: With dead ends: 2069 [2020-08-21 16:24:41,736 INFO L226 Difference]: Without dead ends: 992 [2020-08-21 16:24:41,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:24:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-08-21 16:24:41,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 936. [2020-08-21 16:24:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-08-21 16:24:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1136 transitions. [2020-08-21 16:24:41,926 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1136 transitions. Word has length 130 [2020-08-21 16:24:41,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:41,927 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1136 transitions. [2020-08-21 16:24:41,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:24:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1136 transitions. [2020-08-21 16:24:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 16:24:41,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:41,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:41,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:24:41,932 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:41,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1767310158, now seen corresponding path program 1 times [2020-08-21 16:24:41,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:41,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420199515] [2020-08-21 16:24:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,205 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:24:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:24:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:24:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:24:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 16:24:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 16:24:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 16:24:42,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420199515] [2020-08-21 16:24:42,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:42,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:24:42,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226092245] [2020-08-21 16:24:42,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:24:42,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:42,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:24:42,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:24:42,390 INFO L87 Difference]: Start difference. First operand 936 states and 1136 transitions. Second operand 13 states. [2020-08-21 16:24:42,801 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:43,431 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:45,371 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:45,622 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:45,870 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:46,091 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:46,348 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:46,575 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:46,812 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:47,037 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:47,288 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:47,509 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:48,199 INFO L93 Difference]: Finished difference Result 2701 states and 3404 transitions. [2020-08-21 16:24:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 16:24:48,200 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 16:24:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:48,211 INFO L225 Difference]: With dead ends: 2701 [2020-08-21 16:24:48,211 INFO L226 Difference]: Without dead ends: 1789 [2020-08-21 16:24:48,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 16:24:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-08-21 16:24:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1687. [2020-08-21 16:24:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-21 16:24:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2019 transitions. [2020-08-21 16:24:48,552 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2019 transitions. Word has length 130 [2020-08-21 16:24:48,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:48,554 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2019 transitions. [2020-08-21 16:24:48,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:24:48,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2019 transitions. [2020-08-21 16:24:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 16:24:48,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:48,559 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:24:48,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:24:48,559 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:48,560 INFO L82 PathProgramCache]: Analyzing trace with hash 941448042, now seen corresponding path program 1 times [2020-08-21 16:24:48,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:48,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578590048] [2020-08-21 16:24:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,836 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:48,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:24:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:24:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 16:24:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:24:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 16:24:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 16:24:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 16:24:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 16:24:48,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578590048] [2020-08-21 16:24:48,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:48,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 16:24:48,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248594561] [2020-08-21 16:24:48,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:24:48,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:48,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:24:48,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:24:48,974 INFO L87 Difference]: Start difference. First operand 1687 states and 2019 transitions. Second operand 11 states. [2020-08-21 16:24:49,381 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:51,276 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:51,496 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:51,742 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:51,985 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:52,238 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:52,824 INFO L93 Difference]: Finished difference Result 1997 states and 2554 transitions. [2020-08-21 16:24:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 16:24:52,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-21 16:24:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:52,836 INFO L225 Difference]: With dead ends: 1997 [2020-08-21 16:24:52,836 INFO L226 Difference]: Without dead ends: 1994 [2020-08-21 16:24:52,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-21 16:24:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-08-21 16:24:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1687. [2020-08-21 16:24:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-21 16:24:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2009 transitions. [2020-08-21 16:24:53,230 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2009 transitions. Word has length 134 [2020-08-21 16:24:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:53,231 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2009 transitions. [2020-08-21 16:24:53,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:24:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2009 transitions. [2020-08-21 16:24:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 16:24:53,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:53,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:53,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:24:53,237 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:53,238 INFO L82 PathProgramCache]: Analyzing trace with hash 108116472, now seen corresponding path program 1 times [2020-08-21 16:24:53,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:53,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211161919] [2020-08-21 16:24:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,522 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:53,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:24:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:24:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:24:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:24:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 16:24:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 16:24:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 16:24:53,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211161919] [2020-08-21 16:24:53,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:53,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:24:53,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049303397] [2020-08-21 16:24:53,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:24:53,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:53,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:24:53,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:53,686 INFO L87 Difference]: Start difference. First operand 1687 states and 2009 transitions. Second operand 12 states. [2020-08-21 16:24:54,325 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:55,097 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:55,356 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:55,596 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:55,832 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:56,055 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:56,365 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:57,057 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:57,320 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:57,561 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:59,608 INFO L93 Difference]: Finished difference Result 4159 states and 5274 transitions. [2020-08-21 16:24:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 16:24:59,609 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-21 16:24:59,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:59,624 INFO L225 Difference]: With dead ends: 4159 [2020-08-21 16:24:59,624 INFO L226 Difference]: Without dead ends: 2806 [2020-08-21 16:24:59,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 16:24:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-08-21 16:25:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2479. [2020-08-21 16:25:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-08-21 16:25:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3004 transitions. [2020-08-21 16:25:00,117 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3004 transitions. Word has length 134 [2020-08-21 16:25:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:00,120 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3004 transitions. [2020-08-21 16:25:00,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:25:00,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3004 transitions. [2020-08-21 16:25:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-21 16:25:00,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:00,132 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, 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] [2020-08-21 16:25:00,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:25:00,133 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:00,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1415393837, now seen corresponding path program 2 times [2020-08-21 16:25:00,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:00,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087921144] [2020-08-21 16:25:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,482 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 16:25:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:25:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 16:25:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 16:25:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-21 16:25:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:25:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-21 16:25:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 16:25:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-21 16:25:00,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087921144] [2020-08-21 16:25:00,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:00,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 16:25:00,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459078883] [2020-08-21 16:25:00,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 16:25:00,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:00,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 16:25:00,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:25:00,837 INFO L87 Difference]: Start difference. First operand 2479 states and 3004 transitions. Second operand 14 states. [2020-08-21 16:25:01,744 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:02,343 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:02,847 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:03,120 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:03,384 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:03,636 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:03,943 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:04,240 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:06,255 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:06,513 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:07,689 INFO L93 Difference]: Finished difference Result 5715 states and 7591 transitions. [2020-08-21 16:25:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 16:25:07,690 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2020-08-21 16:25:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:07,711 INFO L225 Difference]: With dead ends: 5715 [2020-08-21 16:25:07,711 INFO L226 Difference]: Without dead ends: 3672 [2020-08-21 16:25:07,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=323, Invalid=937, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 16:25:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2020-08-21 16:25:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2349. [2020-08-21 16:25:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-08-21 16:25:08,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 2858 transitions. [2020-08-21 16:25:08,215 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 2858 transitions. Word has length 189 [2020-08-21 16:25:08,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:08,215 INFO L479 AbstractCegarLoop]: Abstraction has 2349 states and 2858 transitions. [2020-08-21 16:25:08,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 16:25:08,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 2858 transitions. [2020-08-21 16:25:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-21 16:25:08,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:08,223 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, 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] [2020-08-21 16:25:08,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:25:08,224 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:08,224 INFO L82 PathProgramCache]: Analyzing trace with hash -116138867, now seen corresponding path program 3 times [2020-08-21 16:25:08,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:08,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855084591] [2020-08-21 16:25:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:25:08,288 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:25:08,289 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:25:08,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 16:25:08,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:25:08 BoogieIcfgContainer [2020-08-21 16:25:08,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:25:08,335 INFO L168 Benchmark]: Toolchain (without parser) took 58263.87 ms. Allocated memory was 140.0 MB in the beginning and 880.3 MB in the end (delta: 740.3 MB). Free memory was 102.2 MB in the beginning and 274.2 MB in the end (delta: -172.0 MB). Peak memory consumption was 568.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:25:08,336 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:25:08,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.29 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 170.7 MB in the end (delta: -68.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:25:08,337 INFO L168 Benchmark]: Boogie Preprocessor took 89.23 ms. Allocated memory is still 202.9 MB. Free memory was 170.7 MB in the beginning and 166.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:25:08,338 INFO L168 Benchmark]: RCFGBuilder took 1091.72 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.0 MB in the beginning and 193.7 MB in the end (delta: -27.7 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:25:08,338 INFO L168 Benchmark]: TraceAbstraction took 56475.27 ms. Allocated memory was 235.9 MB in the beginning and 880.3 MB in the end (delta: 644.3 MB). Free memory was 193.7 MB in the beginning and 274.2 MB in the end (delta: -80.5 MB). Peak memory consumption was 563.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:25:08,343 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 603.29 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 170.7 MB in the end (delta: -68.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.23 ms. Allocated memory is still 202.9 MB. Free memory was 170.7 MB in the beginning and 166.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1091.72 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.0 MB in the beginning and 193.7 MB in the end (delta: -27.7 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 56475.27 ms. Allocated memory was 235.9 MB in the beginning and 880.3 MB in the end (delta: 644.3 MB). Free memory was 193.7 MB in the beginning and 274.2 MB in the end (delta: -80.5 MB). Peak memory consumption was 563.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int pumpRunning = 0; [L525] int systemActive = 1; [L728] int waterLevel = 1; [L729] int methaneLevelCritical = 0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L450] int splverifierCounter ; [L451] int tmp ; [L452] int tmp___0 ; [L453] int tmp___1 ; [L454] int tmp___2 ; [L457] splverifierCounter = 0 [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND TRUE \read(tmp) [L471] CALL waterRise() [L746] COND TRUE waterLevel < 2 [L747] waterLevel = waterLevel + 1 [L471] RET waterRise() [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND FALSE !(\read(pumpRunning)) [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND FALSE !(\read(pumpRunning)) [L605] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND TRUE ! pumpRunning [L566] CALL, EXPR isHighWaterLevel() [L684] int retValue_acc ; [L685] int tmp ; [L686] int tmp___0 ; [L690] CALL, EXPR isHighWaterSensorDry() [L808] int retValue_acc ; [L811] COND FALSE !(waterLevel < 2) [L815] retValue_acc = 0 [L816] return (retValue_acc); [L690] RET, EXPR isHighWaterSensorDry() [L690] tmp = isHighWaterSensorDry() [L692] COND FALSE !(\read(tmp)) [L695] tmp___0 = 1 [L697] retValue_acc = tmp___0 [L698] return (retValue_acc); [L566] RET, EXPR isHighWaterLevel() [L566] tmp = isHighWaterLevel() [L568] COND TRUE \read(tmp) [L570] CALL activatePump() [L615] pumpRunning = 1 [L570] RET activatePump() [L605] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) [L547] RET __utac_acc__Specification4_spec__1() [L504] RET timeShift() [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND TRUE \read(pumpRunning) [L534] CALL lowerWaterLevel() [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L534] RET lowerWaterLevel() [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L592] CALL, EXPR isMethaneAlarm() [L628] int retValue_acc ; [L632] CALL, EXPR isMethaneLevelCritical() [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] RET, EXPR isMethaneLevelCritical() [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] RET, EXPR isMethaneAlarm() [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L600] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L579] FCALL processEnvironment__wrappee__base() [L600] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) [L547] RET __utac_acc__Specification4_spec__1() [L504] RET timeShift() [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND TRUE \read(pumpRunning) [L534] CALL lowerWaterLevel() [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L534] RET lowerWaterLevel() [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L592] CALL, EXPR isMethaneAlarm() [L628] int retValue_acc ; [L632] CALL, EXPR isMethaneLevelCritical() [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] RET, EXPR isMethaneLevelCritical() [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] RET, EXPR isMethaneAlarm() [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L600] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L579] FCALL processEnvironment__wrappee__base() [L600] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND TRUE tmp == 0 [L928] CALL, EXPR isPumpRunning() [L639] int retValue_acc ; [L642] retValue_acc = pumpRunning [L643] return (retValue_acc); [L928] RET, EXPR isPumpRunning() [L928] tmp___0 = isPumpRunning() [L930] COND TRUE \read(tmp___0) [L932] CALL __automaton_fail() [L722] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 56.3s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 47.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1589 SDtfs, 3804 SDslu, 2029 SDs, 0 SdLazy, 12549 SolverSat, 2683 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 658 GetRequests, 427 SyntacticMatches, 13 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2479occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 2622 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1378 NumberOfCodeBlocks, 1378 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1181 ConstructedInterpolants, 0 QuantifiedInterpolants, 458598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 217/258 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...